212550022520 has 32 divisors (see below), whose sum is σ = 521713692720. Its totient is φ = 77290917120.

The previous prime is 212550022501. The next prime is 212550022537. The reversal of 212550022520 is 25220055212.

It is a self number, because there is not a number n which added to its sum of digits gives 212550022520.

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, 241533677 + ... + 241534556.

Almost surely, 2^212550022520 is an apocalyptic number.

212550022520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212550022520 is an abundant number, since it is smaller than the sum of its proper divisors (309163670200).

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

212550022520 is a wasteful number, since it uses less digits than its factorization.

212550022520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483068255 (or 483068251 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

Adding to 212550022520 its reverse (25220055212), we get a palindrome (237770077732).

The spelling of 212550022520 in words is "two hundred twelve billion, five hundred fifty million, twenty-two thousand, five hundred twenty".