22012111112 has 8 divisors (see below), whose sum is σ = 41272708350. Its totient is φ = 11006055552.

The previous prime is 22012111091. The next prime is 22012111129. The reversal of 22012111112 is 21111121022.

It can be written as a sum of positive squares in only one way, i.e., 21740322916 + 271788196 = 147446^2 + 16486^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1375756937 + ... + 1375756952.

Almost surely, 2^22012111112 is an apocalyptic number.

It is an amenable number.

22012111112 is a deficient number, since it is larger than the sum of its proper divisors (19260597238).

22012111112 is a wasteful number, since it uses less digits than its factorization.

22012111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751513895 (or 2751513891 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22012111112 its reverse (21111121022), we get a palindrome (43123232134).

The spelling of 22012111112 in words is "twenty-two billion, twelve million, one hundred eleven thousand, one hundred twelve".