12222122111212 has 24 divisors (see below), whose sum is σ = 23262058773072. Its totient is φ = 5585128152000.

The previous prime is 12222122111179. The next prime is 12222122111239. The reversal of 12222122111212 is 21211122122221.

It is a super-2 number, since 2×12222122111212² (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1163563114 + ... + 1163573617.

It is an arithmetic number, because the mean of its divisors is an integer number (969252448878).

Almost surely, 2^{12222122111212} is an apocalyptic number.

It is an amenable number.

12222122111212 is a deficient number, since it is larger than the sum of its proper divisors (11039936661860).

12222122111212 is a wasteful number, since it uses less digits than its factorization.

12222122111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327136849 (or 2327136847 counting only the distinct ones).

The product of its digits is 256, while the sum is 22.

Adding to 12222122111212 its reverse (21211122122221), we get a palindrome (33433244233433).

The spelling of 12222122111212 in words is "twelve trillion, two hundred twenty-two billion, one hundred twenty-two million, one hundred eleven thousand, two hundred twelve".