| Base | Representation |
|---|---|
| bin | 110111111011100101… |
| … | …1011111100010010100 |
| 3 | 102111000202020011221001 |
| 4 | 1233313023133202110 |
| 5 | 3431441420231400 |
| 6 | 131102301433044 |
| 7 | 11451315344143 |
| oct | 1576713374224 |
| 9 | 374022204831 |
| 10 | 120111102100 |
| 11 | 46a36649840 |
| 12 | 1b340b6b784 |
| 13 | b432217262 |
| 14 | 5b55dc775a |
| 15 | 31ceaeea6a |
| hex | 1bf72df894 |
120111102100 has 72 divisors (see below), whose sum is σ = 285067692000. Its totient is φ = 43564329600.
The previous prime is 120111102053. The next prime is 120111102109. The reversal of 120111102100 is 1201111021.
It is a Harshad number since it is a multiple of its sum of digits (10).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (120111102109) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 287551 + ... + 568249.
It is an arithmetic number, because the mean of its divisors is an integer number (3959273500).
Almost surely, 2120111102100 is an apocalyptic number.
120111102100 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 120111102100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142533846000).
120111102100 is an abundant number, since it is smaller than the sum of its proper divisors (164956589900).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
120111102100 is a wasteful number, since it uses less digits than its factorization.
120111102100 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 281113 (or 281106 counting only the distinct ones).
The product of its (nonzero) digits is 4, while the sum is 10.
Adding to 120111102100 its reverse (1201111021), we get a palindrome (121312213121).
120111102100 divided by its reverse (1201111021) gives a square (100 = 102).
It can be divided in two parts, 12011 and 1102100, that added together give a palindrome (1114111).
The spelling of 120111102100 in words is "one hundred twenty billion, one hundred eleven million, one hundred two thousand, one hundred".
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