22111100012 has 12 divisors (see below), whose sum is σ = 38695606656. Its totient is φ = 11055212400.

The previous prime is 22111100009. The next prime is 22111100041. The reversal of 22111100012 is 21000111122.

It is a junction number, because it is equal to n+sod(n) for n = 22111099966 and 22111100002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115637 + ... + 239987.

It is an arithmetic number, because the mean of its divisors is an integer number (3224633888).

Almost surely, 2^22111100012 is an apocalyptic number.

It is an amenable number.

22111100012 is a deficient number, since it is larger than the sum of its proper divisors (16584506644).

22111100012 is a wasteful number, since it uses less digits than its factorization.

22111100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168808 (or 168806 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 22111100012 its reverse (21000111122), we get a palindrome (43111211134).

The spelling of 22111100012 in words is "twenty-two billion, one hundred eleven million, one hundred thousand, twelve".