212808504900 has 72 divisors (see below), whose sum is σ = 621822325824. Its totient is φ = 56187056000.

The previous prime is 212808504859. The next prime is 212808504907. The reversal of 212808504900 is 9405808212.

It is not an unprimeable number, because it can be changed into a prime (212808504907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3481392 + ... + 3541991.

It is an arithmetic number, because the mean of its divisors is an integer number (8636421192).

Almost surely, 2^212808504900 is an apocalyptic number.

212808504900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212808504900 is an abundant number, since it is smaller than the sum of its proper divisors (409013820924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212808504900 is a wasteful number, since it uses less digits than its factorization.

212808504900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7023501 (or 7023494 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 212808504900 in words is "two hundred twelve billion, eight hundred eight million, five hundred four thousand, nine hundred".