21010122122102 has 16 divisors (see below), whose sum is σ = 31976809300800. Its totient is φ = 10351708186560.

The previous prime is 21010122121999. The next prime is 21010122122137. The reversal of 21010122122102 is 20122122101012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130543799 + ... + 130704642.

It is an arithmetic number, because the mean of its divisors is an integer number (1998550581300).

Almost surely, 2^{21010122122102} is an apocalyptic number.

21010122122102 is a deficient number, since it is larger than the sum of its proper divisors (10966687178698).

21010122122102 is a wasteful number, since it uses less digits than its factorization.

21010122122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261249031.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21010122122102 its reverse (20122122101012), we get a palindrome (41132244223114).

The spelling of 21010122122102 in words is "twenty-one trillion, ten billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred two".