212021155200 has 96 divisors (see below), whose sum is σ = 698344711560. Its totient is φ = 56538972160.

The previous prime is 212021155183. The next prime is 212021155289. The reversal of 212021155200 is 2551120212.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11033169 + ... + 11052368.

Almost surely, 2^212021155200 is an apocalyptic number.

212021155200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212021155200 is an abundant number, since it is smaller than the sum of its proper divisors (486323556360).

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

212021155200 is a wasteful number, since it uses less digits than its factorization.

212021155200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22085564 (or 22085547 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 212021155200 its reverse (2551120212), we get a palindrome (214572275412).

The spelling of 212021155200 in words is "two hundred twelve billion, twenty-one million, one hundred fifty-five thousand, two hundred".