21304054412 has 12 divisors (see below), whose sum is σ = 37913995560. Its totient is φ = 10471484256.

The previous prime is 21304054397. The next prime is 21304054427. The reversal of 21304054412 is 21445040312.

It is an interprime number because it is at equal distance from previous prime (21304054397) and next prime (21304054427).

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, 45135473 + ... + 45135944.

It is an arithmetic number, because the mean of its divisors is an integer number (3159499630).

Almost surely, 2^21304054412 is an apocalyptic number.

It is an amenable number.

21304054412 is a deficient number, since it is larger than the sum of its proper divisors (16609941148).

21304054412 is a wasteful number, since it uses less digits than its factorization.

21304054412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90271480 (or 90271478 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 21304054412 its reverse (21445040312), we get a palindrome (42749094724).

The spelling of 21304054412 in words is "twenty-one billion, three hundred four million, fifty-four thousand, four hundred twelve".