| Base | Representation |
|---|---|
| bin | 10001100110111001101… |
| … | …100010110011000000000 |
| 3 | 11021200020001202210011111 |
| 4 | 101212321230112120000 |
| 5 | 124311040303033440 |
| 6 | 2323511125253104 |
| 7 | 153263646452056 |
| oct | 21467154263000 |
| 9 | 4250201683144 |
| 10 | 1210001221120 |
| 11 | 42718216559a |
| 12 | 17660ab64194 |
| 13 | 8a144611c23 |
| 14 | 427c88c81d6 |
| 15 | 2171cc3a4ea |
| hex | 119b9b16600 |
1210001221120 has 160 divisors (see below), whose sum is σ = 2961579303936. Its totient is φ = 474012672000.
The previous prime is 1210001221109. The next prime is 1210001221127. The reversal of 1210001221120 is 211221000121.
It is a tau number, because it is divible by the number of its divisors (160).
It is a super-2 number, since 2×12100012211202 (a number of 25 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 1210001221120.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1210001221127) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27423717 + ... + 27467803.
Almost surely, 21210001221120 is an apocalyptic number.
1210001221120 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 1210001221120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1480789651968).
1210001221120 is an abundant number, since it is smaller than the sum of its proper divisors (1751578082816).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1210001221120 is an equidigital number, since it uses as much as digits as its factorization.
1210001221120 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 44332 (or 44316 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 13.
Adding to 1210001221120 its reverse (211221000121), we get a palindrome (1421222221241).
The spelling of 1210001221120 in words is "one trillion, two hundred ten billion, one million, two hundred twenty-one thousand, one hundred twenty".
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