21010120000102 has 16 divisors (see below), whose sum is σ = 32348540070000. Its totient is φ = 10228300248960.

The previous prime is 21010120000097. The next prime is 21010120000117. The reversal of 21010120000102 is 20100002101012.

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 7 ways as a sum of consecutive naturals, for example, 256693527 + ... + 256775362.

It is an arithmetic number, because the mean of its divisors is an integer number (2021783754375).

Almost surely, 2^{21010120000102} is an apocalyptic number.

21010120000102 is a deficient number, since it is larger than the sum of its proper divisors (11338420069898).

21010120000102 is a wasteful number, since it uses less digits than its factorization.

21010120000102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513469431.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21010120000102 its reverse (20100002101012), we get a palindrome (41110122101114).

The spelling of 21010120000102 in words is "twenty-one trillion, ten billion, one hundred twenty million, one hundred two", and thus it is an aban number.