12222022111212 has 12 divisors (see below), whose sum is σ = 28518051592856. Its totient is φ = 4074007370400.

The previous prime is 12222022111199. The next prime is 12222022111219. The reversal of 12222022111212 is 21211122022221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×12222022111212² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12222022111219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509250921289 + ... + 509250921312.

Almost surely, 2^{12222022111212} is an apocalyptic number.

12222022111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12222022111212 is an abundant number, since it is smaller than the sum of its proper divisors (16296029481644).

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

12222022111212 is a wasteful number, since it uses less digits than its factorization.

12222022111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018501842608 (or 1018501842606 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12222022111212 its reverse (21211122022221), we get a palindrome (33433144133433).

The spelling of 12222022111212 in words is "twelve trillion, two hundred twenty-two billion, twenty-two million, one hundred eleven thousand, two hundred twelve".