22166631 has 12 divisors (see below), whose sum is σ = 32067880. Its totient is φ = 14754960.

The previous prime is 22166621. The next prime is 22166647. The reversal of 22166631 is 13666122.

It is a de Polignac number, because none of the positive numbers 2^k-22166631 is a prime.

It is a super-2 number, since 2×22166631² = 982719059780322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22166595 and 22166604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22166611) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 5976 + ... + 8946.

Almost surely, 2^22166631 is an apocalyptic number.

22166631 is a deficient number, since it is larger than the sum of its proper divisors (9901249).

22166631 is a wasteful number, since it uses less digits than its factorization.

22166631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3806 (or 3803 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 22166631 is about 4708.1451761814. The cubic root of 22166631 is about 280.9095887417.

The spelling of 22166631 in words is "twenty-two million, one hundred sixty-six thousand, six hundred thirty-one".