22113189681 has 16 divisors (see below), whose sum is σ = 32380516800. Its totient is φ = 13311984320.

The previous prime is 22113189643. The next prime is 22113189689. The reversal of 22113189681 is 18698131122.

It is a cyclic number.

It is not a de Polignac number, because 22113189681 - 2⁹ = 22113189169 is a prime.

It is a super-2 number, since 2×22113189681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22113189689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2243730 + ... + 2253563.

It is an arithmetic number, because the mean of its divisors is an integer number (2023782300).

Almost surely, 2^22113189681 is an apocalyptic number.

It is an amenable number.

22113189681 is a deficient number, since it is larger than the sum of its proper divisors (10267327119).

22113189681 is a wasteful number, since it uses less digits than its factorization.

22113189681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4497456.

The product of its digits is 41472, while the sum is 42.

The spelling of 22113189681 in words is "twenty-two billion, one hundred thirteen million, one hundred eighty-nine thousand, six hundred eighty-one".