21310144312332 has 12 divisors (see below), whose sum is σ = 49723670062136. Its totient is φ = 7103381437440.

The previous prime is 21310144312309. The next prime is 21310144312349. The reversal of 21310144312332 is 23321344101312.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×21310144312332² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21310144312332.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 887922679669 + ... + 887922679692.

Almost surely, 2^{21310144312332} is an apocalyptic number.

It is an amenable number.

21310144312332 is an abundant number, since it is smaller than the sum of its proper divisors (28413525749804).

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

21310144312332 is a wasteful number, since it uses less digits than its factorization.

21310144312332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775845359368 (or 1775845359366 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 21310144312332 its reverse (23321344101312), we get a palindrome (44631488413644).

The spelling of 21310144312332 in words is "twenty-one trillion, three hundred ten billion, one hundred forty-four million, three hundred twelve thousand, three hundred thirty-two".