21334304012 has 12 divisors (see below), whose sum is σ = 42668608080. Its totient is φ = 9143273136.

The previous prime is 21334303987. The next prime is 21334304027. The reversal of 21334304012 is 21040343312.

21334304012 is an admirable number.

It is a super-2 number, since 2×21334304012² (a number of 21 digits) contains 22 as substring.

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, 380969687 + ... + 380969742.

It is an arithmetic number, because the mean of its divisors is an integer number (3555717340).

Almost surely, 2^21334304012 is an apocalyptic number.

It is an amenable number.

21334304012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21334304012 is a wasteful number, since it uses less digits than its factorization.

21334304012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761939440 (or 761939438 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21334304012 its reverse (21040343312), we get a palindrome (42374647324).

The spelling of 21334304012 in words is "twenty-one billion, three hundred thirty-four million, three hundred four thousand, twelve".