222222212011212 has 48 divisors (see below), whose sum is σ = 594953491974912. Its totient is φ = 63239104152000.

The previous prime is 222222212011187. The next prime is 222222212011229. The reversal of 222222212011212 is 212110212222222.

It is a happy number.

It is a super-2 number, since 2×222222212011212² (a number of 29 digits) contains 22 as substring.

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, 5269904263 + ... + 5269946430.

It is an arithmetic number, because the mean of its divisors is an integer number (12394864416144).

Almost surely, 2^{222222212011212} is an apocalyptic number.

It is an amenable number.

222222212011212 is an abundant number, since it is smaller than the sum of its proper divisors (372731279963700).

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

222222212011212 is a wasteful number, since it uses less digits than its factorization.

222222212011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10539850958 (or 10539850956 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 222222212011212 its reverse (212110212222222), we get a palindrome (434332424233434).

The spelling of 222222212011212 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, two hundred twelve million, eleven thousand, two hundred twelve".