20212253404 has 12 divisors (see below), whose sum is σ = 40424506864. Its totient is φ = 8662394304.

The previous prime is 20212253401. The next prime is 20212253471. The reversal of 20212253404 is 40435221202.

20212253404 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212253401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360933069 + ... + 360933124.

Almost surely, 2^20212253404 is an apocalyptic number.

It is an amenable number.

20212253404 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.

20212253404 is a wasteful number, since it uses less digits than its factorization.

20212253404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721866204 (or 721866202 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 20212253404 its reverse (40435221202), we get a palindrome (60647474606).

The spelling of 20212253404 in words is "twenty billion, two hundred twelve million, two hundred fifty-three thousand, four hundred four".