21230304024 has 32 divisors (see below), whose sum is σ = 53177664240. Its totient is φ = 7063180800.

The previous prime is 21230304019. The next prime is 21230304047. The reversal of 21230304024 is 42040303212.

It is a congruent number.

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, 836437 + ... + 861444.

Almost surely, 2^21230304024 is an apocalyptic number.

21230304024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21230304024 is an abundant number, since it is smaller than the sum of its proper divisors (31947360216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21230304024 is a wasteful number, since it uses less digits than its factorization.

21230304024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698411 (or 1698407 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 21230304024 its reverse (42040303212), we get a palindrome (63270607236).

The spelling of 21230304024 in words is "twenty-one billion, two hundred thirty million, three hundred four thousand, twenty-four".