21321310112323 has 32 divisors (see below), whose sum is σ = 23576680108800. Its totient is φ = 19160416308096.

The previous prime is 21321310112321. The next prime is 21321310112339. The reversal of 21321310112323 is 32321101312312.

It is a cyclic number.

It is not a de Polignac number, because 21321310112323 - 2¹ = 21321310112321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21321310112321) 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, 255110740 + ... + 255194302.

It is an arithmetic number, because the mean of its divisors is an integer number (736771253400).

Almost surely, 2^{21321310112323} is an apocalyptic number.

21321310112323 is a deficient number, since it is larger than the sum of its proper divisors (2255369996477).

21321310112323 is a wasteful number, since it uses less digits than its factorization.

21321310112323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86851.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 21321310112323 its reverse (32321101312312), we get a palindrome (53642411424635).

The spelling of 21321310112323 in words is "twenty-one trillion, three hundred twenty-one billion, three hundred ten million, one hundred twelve thousand, three hundred twenty-three".