21304123324 has 48 divisors (see below), whose sum is σ = 42369868800. Its totient is φ = 9287331200.

The previous prime is 21304123301. The next prime is 21304123417. The reversal of 21304123324 is 42332140312.

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, 6357 + ... + 206515.

It is an arithmetic number, because the mean of its divisors is an integer number (882705600).

Almost surely, 2^21304123324 is an apocalyptic number.

It is an amenable number.

21304123324 is a deficient number, since it is larger than the sum of its proper divisors (21065745476).

21304123324 is a wasteful number, since it uses less digits than its factorization.

21304123324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200274 (or 200272 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21304123324 its reverse (42332140312), we get a palindrome (63636263636).

The spelling of 21304123324 in words is "twenty-one billion, three hundred four million, one hundred twenty-three thousand, three hundred twenty-four".