212121220222200 has 96 divisors (see below), whose sum is σ = 696256711115760. Its totient is φ = 53238267033600.

The previous prime is 212121220222199. The next prime is 212121220222213. The reversal of 212121220222200 is 2222022121212.

212121220222200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10398088831 + ... + 10398109230.

Almost surely, 2^{212121220222200} is an apocalyptic number.

212121220222200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212121220222200 is an abundant number, since it is smaller than the sum of its proper divisors (484135490893560).

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

212121220222200 is a wasteful number, since it uses less digits than its factorization.

212121220222200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20796198097 (or 20796198088 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 212121220222200 its reverse (2222022121212), we get a palindrome (214343242343412).

The spelling of 212121220222200 in words is "two hundred twelve trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twenty-two thousand, two hundred".