21312310030122 has 64 divisors (see below), whose sum is σ = 44179996872960. Its totient is φ = 6845834688000.

The previous prime is 21312310030103. The next prime is 21312310030127. The reversal of 21312310030122 is 22103001321312.

It is not an unprimeable number, because it can be changed into a prime (21312310030127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243050347 + ... + 243138017.

It is an arithmetic number, because the mean of its divisors is an integer number (690312451140).

Almost surely, 2^{21312310030122} is an apocalyptic number.

21312310030122 is an abundant number, since it is smaller than the sum of its proper divisors (22867686842838).

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

21312310030122 is a wasteful number, since it uses less digits than its factorization.

21312310030122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90399.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21312310030122 its reverse (22103001321312), we get a palindrome (43415311351434).

The spelling of 21312310030122 in words is "twenty-one trillion, three hundred twelve billion, three hundred ten million, thirty thousand, one hundred twenty-two".