222120201212 has 48 divisors (see below), whose sum is σ = 479078691840. Its totient is φ = 87749410752.

The previous prime is 222120201167. The next prime is 222120201221. The reversal of 222120201212 is 212102021222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162638 + ... + 686069.

It is an arithmetic number, because the mean of its divisors is an integer number (9980806080).

Almost surely, 2^222120201212 is an apocalyptic number.

It is an amenable number.

222120201212 is an abundant number, since it is smaller than the sum of its proper divisors (256958490628).

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

222120201212 is a wasteful number, since it uses less digits than its factorization.

222120201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849450 (or 849448 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222120201212 its reverse (212102021222), we get a palindrome (434222222434).

The spelling of 222120201212 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred one thousand, two hundred twelve".