21412040204 has 12 divisors (see below), whose sum is σ = 37922529624. Its totient is φ = 10577031744.

The previous prime is 21412040191. The next prime is 21412040219. The reversal of 21412040204 is 40204021412.

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, 32246717 + ... + 32247380.

It is an arithmetic number, because the mean of its divisors is an integer number (3160210802).

Almost surely, 2^21412040204 is an apocalyptic number.

It is an amenable number.

21412040204 is a deficient number, since it is larger than the sum of its proper divisors (16510489420).

21412040204 is a wasteful number, since it uses less digits than its factorization.

21412040204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64494184 (or 64494182 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 21412040204 its reverse (40204021412), we get a palindrome (61616061616).

The spelling of 21412040204 in words is "twenty-one billion, four hundred twelve million, forty thousand, two hundred four".