22236366681 has 12 divisors (see below), whose sum is σ = 33155299840. Its totient is φ = 14346042840.

The previous prime is 22236366629. The next prime is 22236366697. The reversal of 22236366681 is 18666363222.

It is a happy number.

It is not a de Polignac number, because 22236366681 - 2⁹ = 22236366169 is a prime.

It is a super-2 number, since 2×22236366681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22236366181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39849841 + ... + 39850398.

Almost surely, 2^22236366681 is an apocalyptic number.

It is an amenable number.

22236366681 is a deficient number, since it is larger than the sum of its proper divisors (10918933159).

22236366681 is a wasteful number, since it uses less digits than its factorization.

22236366681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79700276 (or 79700273 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The spelling of 22236366681 in words is "twenty-two billion, two hundred thirty-six million, three hundred sixty-six thousand, six hundred eighty-one".