21020101012122 has 16 divisors (see below), whose sum is σ = 42833413383840. Its totient is φ = 6874498444112.

The previous prime is 21020101012039. The next prime is 21020101012213. The reversal of 21020101012122 is 22121010102012.

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, 33050472972 + ... + 33050473607.

It is an arithmetic number, because the mean of its divisors is an integer number (2677088336490).

Almost surely, 2^{21020101012122} is an apocalyptic number.

21020101012122 is an abundant number, since it is smaller than the sum of its proper divisors (21813312371718).

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

21020101012122 is a wasteful number, since it uses less digits than its factorization.

21020101012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66100946637.

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

Adding to 21020101012122 its reverse (22121010102012), we get a palindrome (43141111114134).

The spelling of 21020101012122 in words is "twenty-one trillion, twenty billion, one hundred one million, twelve thousand, one hundred twenty-two".