22100111212 has 24 divisors (see below), whose sum is σ = 41284131840. Its totient is φ = 10321027920.

The previous prime is 22100111207. The next prime is 22100111227. The reversal of 22100111212 is 21211100122.

It is a junction number, because it is equal to n+sod(n) for n = 22100111192 and 22100111201.

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, 2042428 + ... + 2053219.

It is an arithmetic number, because the mean of its divisors is an integer number (1720172160).

Almost surely, 2^22100111212 is an apocalyptic number.

It is an amenable number.

22100111212 is a deficient number, since it is larger than the sum of its proper divisors (19184020628).

22100111212 is a wasteful number, since it uses less digits than its factorization.

22100111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4095741 (or 4095739 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22100111212 its reverse (21211100122), we get a palindrome (43311211334).

The spelling of 22100111212 in words is "twenty-two billion, one hundred million, one hundred eleven thousand, two hundred twelve".