21310021000122 has 128 divisors (see below), whose sum is σ = 49387329331200. Its totient is φ = 6085219737600.

The previous prime is 21310021000087. The next prime is 21310021000127. The reversal of 21310021000122 is 22100012001312.

It is not an unprimeable number, because it can be changed into a prime (21310021000127) 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 63 ways as a sum of consecutive naturals, for example, 7074922 + ... + 9626762.

It is an arithmetic number, because the mean of its divisors is an integer number (385838510400).

Almost surely, 2^{21310021000122} is an apocalyptic number.

21310021000122 is an abundant number, since it is smaller than the sum of its proper divisors (28077308331078).

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

21310021000122 is a wasteful number, since it uses less digits than its factorization.

21310021000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552052.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21310021000122 its reverse (22100012001312), we get a palindrome (43410033001434).

The spelling of 21310021000122 in words is "twenty-one trillion, three hundred ten billion, twenty-one million, one hundred twenty-two", and thus it is an aban number.