21312123000232 has 32 divisors (see below), whose sum is σ = 40069884441600. Its totient is φ = 10626860520000.

The previous prime is 21312123000167. The next prime is 21312123000241. The reversal of 21312123000232 is 23200032121312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1758057 + ... + 6761287.

It is an arithmetic number, because the mean of its divisors is an integer number (1252183888800).

Almost surely, 2^{21312123000232} is an apocalyptic number.

It is an amenable number.

21312123000232 is a deficient number, since it is larger than the sum of its proper divisors (18757761441368).

21312123000232 is a wasteful number, since it uses less digits than its factorization.

21312123000232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5004697 (or 5004693 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21312123000232 its reverse (23200032121312), we get a palindrome (44512155121544).

The spelling of 21312123000232 in words is "twenty-one trillion, three hundred twelve billion, one hundred twenty-three million, two hundred thirty-two", and thus it is an aban number.