21013270412 has 6 divisors (see below), whose sum is σ = 36773223228. Its totient is φ = 10506635204.

The previous prime is 21013270409. The next prime is 21013270429. The reversal of 21013270412 is 21407231012.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2626658798 + ... + 2626658805.

It is an arithmetic number, because the mean of its divisors is an integer number (6128870538).

Almost surely, 2^21013270412 is an apocalyptic number.

It is an amenable number.

21013270412 is a deficient number, since it is larger than the sum of its proper divisors (15759952816).

21013270412 is a wasteful number, since it uses less digits than its factorization.

21013270412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5253317607 (or 5253317605 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The spelling of 21013270412 in words is "twenty-one billion, thirteen million, two hundred seventy thousand, four hundred twelve".