22112188407 has 8 divisors (see below), whose sum is σ = 32758797680. Its totient is φ = 14741458920.

The previous prime is 22112188403. The next prime is 22112188409. The reversal of 22112188407 is 70488121122.

It is a happy number.

22112188407 is a `hidden beast` number, since 22 + 11 + 218 + 8 + 407 = 666.

It is not a de Polignac number, because 22112188407 - 2² = 22112188403 is a prime.

It is a super-2 number, since 2×22112188407² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112188403) 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, 409484944 + ... + 409484997.

It is an arithmetic number, because the mean of its divisors is an integer number (4094849710).

Almost surely, 2^22112188407 is an apocalyptic number.

22112188407 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

22112188407 is a deficient number, since it is larger than the sum of its proper divisors (10646609273).

22112188407 is an equidigital number, since it uses as much as digits as its factorization.

22112188407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818969950 (or 818969944 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The spelling of 22112188407 in words is "twenty-two billion, one hundred twelve million, one hundred eighty-eight thousand, four hundred seven".