| Base | Representation |
|---|---|
| bin | 10110101110011111… |
| … | …00010111001010000 |
| 3 | 1011111022112122221110 |
| 4 | 23113033202321100 |
| 5 | 144441441023440 |
| 6 | 5334412053320 |
| 7 | 611232506352 |
| oct | 132717427120 |
| 9 | 34438478843 |
| 10 | 12201111120 |
| 11 | 51a1233410 |
| 12 | 2446164240 |
| 13 | 11c5a1a7a3 |
| 14 | 83a60d0d2 |
| 15 | 4b6249080 |
| hex | 2d73e2e50 |
12201111120 has 160 divisors (see below), whose sum is σ = 42377466240. Its totient is φ = 2877880320.
The previous prime is 12201111113. The next prime is 12201111127. The reversal of 12201111120 is 2111110221.
It is an interprime number because it is at equal distance from previous prime (12201111113) and next prime (12201111127).
It is a super-2 number, since 2×122011111202 (a number of 21 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a junction number, because it is equal to n+sod(n) for n = 12201111096 and 12201111105.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12201111127) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35226 + ... + 160134.
It is an arithmetic number, because the mean of its divisors is an integer number (264859164).
Almost surely, 212201111120 is an apocalyptic number.
12201111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 12201111120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21188733120).
12201111120 is an abundant number, since it is smaller than the sum of its proper divisors (30176355120).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12201111120 is a wasteful number, since it uses less digits than its factorization.
12201111120 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 124973 (or 124967 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 12.
Adding to 12201111120 its reverse (2111110221), we get a palindrome (14312221341).
It can be divided in two parts, 12201 and 111120, that added together give a palindrome (123321).
The spelling of 12201111120 in words is "twelve billion, two hundred one million, one hundred eleven thousand, one hundred twenty".
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