22261131 has 24 divisors (see below), whose sum is σ = 33677696. Its totient is φ = 14152320.

The previous prime is 22261123. The next prime is 22261147. The reversal of 22261131 is 13116222.

22261131 is a `hidden beast` number, since 2 + 22 + 611 + 31 = 666.

It is not a de Polignac number, because 22261131 - 2³ = 22261123 is a prime.

It is a super-2 number, since 2×22261131² = 991115906798322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22261111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19821 + ... + 20913.

Almost surely, 2^22261131 is an apocalyptic number.

22261131 is a deficient number, since it is larger than the sum of its proper divisors (11416565).

22261131 is a wasteful number, since it uses less digits than its factorization.

22261131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 1200 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 22261131 is about 4718.1703021404. The cubic root of 22261131 is about 281.3082107660.

Adding to 22261131 its reverse (13116222), we get a palindrome (35377353).

The spelling of 22261131 in words is "twenty-two million, two hundred sixty-one thousand, one hundred thirty-one".