21134323324 has 12 divisors (see below), whose sum is σ = 37039701384. Its totient is φ = 10551551504.

The previous prime is 21134323247. The next prime is 21134323349. The reversal of 21134323324 is 42332343112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21134323292 and 21134323301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3899494 + ... + 3904909.

It is an arithmetic number, because the mean of its divisors is an integer number (3086641782).

Almost surely, 2^21134323324 is an apocalyptic number.

It is an amenable number.

21134323324 is a deficient number, since it is larger than the sum of its proper divisors (15905378060).

21134323324 is a wasteful number, since it uses less digits than its factorization.

21134323324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7805084 (or 7805082 counting only the distinct ones).

The product of its digits is 10368, while the sum is 28.

Adding to 21134323324 its reverse (42332343112), we get a palindrome (63466666436).

The spelling of 21134323324 in words is "twenty-one billion, one hundred thirty-four million, three hundred twenty-three thousand, three hundred twenty-four".