21312110013032 has 16 divisors (see below), whose sum is σ = 39960632536260. Its totient is φ = 10655941336704.

The previous prime is 21312110013031. The next prime is 21312110013169. The reversal of 21312110013032 is 23031001121312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20590775742436 + 721334270596 = 4537706^2 + 849314^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21312110012995 and 21312110013013.

It is not an unprimeable number, because it can be changed into a prime (21312110013031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13409243 + ... + 14914154.

Almost surely, 2^{21312110013032} is an apocalyptic number.

It is an amenable number.

21312110013032 is a deficient number, since it is larger than the sum of its proper divisors (18648522523228).

21312110013032 is a wasteful number, since it uses less digits than its factorization.

21312110013032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28417460 (or 28417456 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21312110013032 its reverse (23031001121312), we get a palindrome (44343111134344).

The spelling of 21312110013032 in words is "twenty-one trillion, three hundred twelve billion, one hundred ten million, thirteen thousand, thirty-two".