22101111112 has 8 divisors (see below), whose sum is σ = 41439583350. Its totient is φ = 11050555552.

The previous prime is 22101111089. The next prime is 22101111127. The reversal of 22101111112 is 21111110122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20281747396 + 1819363716 = 142414^2 + 42654^2 .

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

It is a super-2 number, since 2×22101111112² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22101111092 and 22101111101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1381319437 + ... + 1381319452.

Almost surely, 2^22101111112 is an apocalyptic number.

It is an amenable number.

22101111112 is a deficient number, since it is larger than the sum of its proper divisors (19338472238).

22101111112 is a wasteful number, since it uses less digits than its factorization.

22101111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2762638895 (or 2762638891 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 22101111112 its reverse (21111110122), we get a palindrome (43212221234).

The spelling of 22101111112 in words is "twenty-two billion, one hundred one million, one hundred eleven thousand, one hundred twelve".