222222120111212 has 24 divisors (see below), whose sum is σ = 420632061435600. Its totient is φ = 102116177459136.

The previous prime is 222222120111133. The next prime is 222222120111227. The reversal of 222222120111212 is 212111021222222.

It is a super-3 number, since 3×222222120111212³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9330779162 + ... + 9330802977.

It is an arithmetic number, because the mean of its divisors is an integer number (17526335893150).

Almost surely, 2^{222222120111212} is an apocalyptic number.

It is an amenable number.

222222120111212 is a deficient number, since it is larger than the sum of its proper divisors (198409941324388).

222222120111212 is a wasteful number, since it uses less digits than its factorization.

222222120111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18661582385 (or 18661582383 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 222222120111212 its reverse (212111021222222), we get a palindrome (434333141333434).

The spelling of 222222120111212 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, one hundred twenty million, one hundred eleven thousand, two hundred twelve".