22222120012112 has 20 divisors (see below), whose sum is σ = 43057569609780. Its totient is φ = 11110489145088.

The previous prime is 22222120012111. The next prime is 22222120012201. The reversal of 22222120012112 is 21121002122222.

It can be written as a sum of positive squares in 2 ways, for example, as 6060144133696 + 16161975878416 = 2461736^2 + 4020196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222120012111) 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, 35357573 + ... + 35980580.

It is an arithmetic number, because the mean of its divisors is an integer number (2152878480489).

Almost surely, 2^{22222120012112} is an apocalyptic number.

It is an amenable number.

22222120012112 is a deficient number, since it is larger than the sum of its proper divisors (20835449597668).

22222120012112 is a wasteful number, since it uses less digits than its factorization.

22222120012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71357630 (or 71357624 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22222120012112 its reverse (21121002122222), we get a palindrome (43343122134334).

The spelling of 22222120012112 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred twenty million, twelve thousand, one hundred twelve".