808521212 has 24 divisors (see below), whose sum is σ = 1506128400. Its totient is φ = 378677376.

The previous prime is 808521179. The next prime is 808521223. The reversal of 808521212 is 212125808.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53003 + ... + 66530.

It is an arithmetic number, because the mean of its divisors is an integer number (62755350).

Almost surely, 2^808521212 is an apocalyptic number.

It is an amenable number.

808521212 is a deficient number, since it is larger than the sum of its proper divisors (697607188).

808521212 is a wasteful number, since it uses less digits than its factorization.

808521212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119645 (or 119643 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 808521212 is about 28434.5074161660. The cubic root of 808521212 is about 931.6021299030.

The spelling of 808521212 in words is "eight hundred eight million, five hundred twenty-one thousand, two hundred twelve".