21071027204 has 12 divisors (see below), whose sum is σ = 36875317584. Its totient is φ = 10535222184.

The previous prime is 21071027183. The next prime is 21071027231. The reversal of 21071027204 is 40272017012.

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, 226499 + ... + 305685.

It is an arithmetic number, because the mean of its divisors is an integer number (3072943132).

Almost surely, 2^21071027204 is an apocalyptic number.

It is an amenable number.

21071027204 is a deficient number, since it is larger than the sum of its proper divisors (15804290380).

21071027204 is a wasteful number, since it uses less digits than its factorization.

21071027204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145714 (or 145712 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The spelling of 21071027204 in words is "twenty-one billion, seventy-one million, twenty-seven thousand, two hundred four".