21330312323134 has 32 divisors (see below), whose sum is σ = 34527958840800. Its totient is φ = 9845204708352.

The previous prime is 21330312323113. The next prime is 21330312323143. The reversal of 21330312323134 is 43132321303312.

It is a junction number, because it is equal to n+sod(n) for n = 21330312323096 and 21330312323105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3635842 + ... + 7475290.

It is an arithmetic number, because the mean of its divisors is an integer number (1078998713775).

Almost surely, 2^{21330312323134} is an apocalyptic number.

21330312323134 is a deficient number, since it is larger than the sum of its proper divisors (13197646517666).

21330312323134 is a wasteful number, since it uses less digits than its factorization.

21330312323134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3842604.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 21330312323134 its reverse (43132321303312), we get a palindrome (64462633626446).

The spelling of 21330312323134 in words is "twenty-one trillion, three hundred thirty billion, three hundred twelve million, three hundred twenty-three thousand, one hundred thirty-four".