21102110000120 has 16 divisors (see below), whose sum is σ = 47479747500360. Its totient is φ = 8440844000032.

The previous prime is 21102110000117. The next prime is 21102110000243. The reversal of 21102110000120 is 2100001120112.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 263776374962 + ... + 263776375041.

Almost surely, 2^{21102110000120} is an apocalyptic number.

21102110000120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21102110000120 is an abundant number, since it is smaller than the sum of its proper divisors (26377637500240).

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

21102110000120 is a wasteful number, since it uses less digits than its factorization.

21102110000120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527552750014 (or 527552750010 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21102110000120 its reverse (2100001120112), we get a palindrome (23202111120232).

The spelling of 21102110000120 in words is "twenty-one trillion, one hundred two billion, one hundred ten million, one hundred twenty", and thus it is an aban number.