22221111121012 has 24 divisors (see below), whose sum is σ = 38895989511680. Its totient is φ = 11107971560160.

The previous prime is 22221111121007. The next prime is 22221111121019. The reversal of 22221111121012 is 21012111112222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221111121019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425755414 + ... + 425807602.

Almost surely, 2^{22221111121012} is an apocalyptic number.

It is an amenable number.

22221111121012 is a deficient number, since it is larger than the sum of its proper divisors (16674878390668).

22221111121012 is a wasteful number, since it uses less digits than its factorization.

22221111121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74911 (or 74909 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 22221111121012 its reverse (21012111112222), we get a palindrome (43233222233234).

The spelling of 22221111121012 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred eleven million, one hundred twenty-one thousand, twelve".