212222021221200 has 60 divisors (see below), whose sum is σ = 679817874649088. Its totient is φ = 56592538992000.

The previous prime is 212222021221169. The next prime is 212222021221271. The reversal of 212222021221200 is 2122120222212.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×212222021221200² (a number of 29 digits) contains 22 as substring.

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, 88425840976 + ... + 88425843375.

Almost surely, 2^{212222021221200} is an apocalyptic number.

212222021221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212222021221200 is an abundant number, since it is smaller than the sum of its proper divisors (467595853427888).

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

212222021221200 is a wasteful number, since it uses less digits than its factorization.

212222021221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176851684372 (or 176851684361 counting only the distinct ones).

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

Adding to 212222021221200 its reverse (2122120222212), we get a palindrome (214344141443412).

The spelling of 212222021221200 in words is "two hundred twelve trillion, two hundred twenty-two billion, twenty-one million, two hundred twenty-one thousand, two hundred".