21312210132032 has 28 divisors (see below), whose sum is σ = 42297871562076. Its totient is φ = 10654478714880.

The previous prime is 21312210132023. The next prime is 21312210132043. The reversal of 21312210132032 is 23023101221312.

It can be written as a sum of positive squares in 2 ways, for example, as 3686184963136 + 17626025168896 = 1919944^2 + 4198336^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21312210131989 and 21312210132007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24989069 + ... + 25827852.

Almost surely, 2^{21312210132032} is an apocalyptic number.

It is an amenable number.

21312210132032 is a deficient number, since it is larger than the sum of its proper divisors (20985661430044).

21312210132032 is an equidigital number, since it uses as much as digits as its factorization.

21312210132032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50823486 (or 50823476 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21312210132032 its reverse (23023101221312), we get a palindrome (44335311353344).

The spelling of 21312210132032 in words is "twenty-one trillion, three hundred twelve billion, two hundred ten million, one hundred thirty-two thousand, thirty-two".