21312033013122 has 32 divisors (see below), whose sum is σ = 43208381518848. Its totient is φ = 7006626999936.

The previous prime is 21312033013109. The next prime is 21312033013133. The reversal of 21312033013122 is 22131033021312.

It is a junction number, because it is equal to n+sod(n) for n = 21312033013092 and 21312033013101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64335988 + ... + 64666400.

It is an arithmetic number, because the mean of its divisors is an integer number (1350261922464).

Almost surely, 2^{21312033013122} is an apocalyptic number.

21312033013122 is an abundant number, since it is smaller than the sum of its proper divisors (21896348505726).

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

21312033013122 is a wasteful number, since it uses less digits than its factorization.

21312033013122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477754.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21312033013122 its reverse (22131033021312), we get a palindrome (43443066034434).

The spelling of 21312033013122 in words is "twenty-one trillion, three hundred twelve billion, thirty-three million, thirteen thousand, one hundred twenty-two".