21010102110120 has 128 divisors (see below), whose sum is σ = 65772705853440. Its totient is φ = 5358939505920.

The previous prime is 21010102110103. The next prime is 21010102110139. The reversal of 21010102110120 is 2101120101012.

21010102110120 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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 = 21010102110096 and 21010102110105.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 113705247 + ... + 113889873.

It is an arithmetic number, because the mean of its divisors is an integer number (513849264480).

Almost surely, 2^{21010102110120} is an apocalyptic number.

21010102110120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21010102110120 is an abundant number, since it is smaller than the sum of its proper divisors (44762603743320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21010102110120 is a wasteful number, since it uses less digits than its factorization.

21010102110120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225895 (or 225891 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21010102110120 its reverse (2101120101012), we get a palindrome (23111222211132).

The spelling of 21010102110120 in words is "twenty-one trillion, ten billion, one hundred two million, one hundred ten thousand, one hundred twenty".