21211021000122 has 16 divisors (see below), whose sum is σ = 42422121968160. Its totient is φ = 7070327005392.

The previous prime is 21211021000093. The next prime is 21211021000139. The reversal of 21211021000122 is 22100012011212.

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, 445629 + ... + 6528447.

It is an arithmetic number, because the mean of its divisors is an integer number (2651382623010).

Almost surely, 2^{21211021000122} is an apocalyptic number.

21211021000122 is an abundant number, since it is smaller than the sum of its proper divisors (21211100968038).

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

21211021000122 is a wasteful number, since it uses less digits than its factorization.

21211021000122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6663997.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21211021000122 its reverse (22100012011212), we get a palindrome (43311033011334).

The spelling of 21211021000122 in words is "twenty-one trillion, two hundred eleven billion, twenty-one million, one hundred twenty-two", and thus it is an aban number.