22027131 has 12 divisors (see below), whose sum is σ = 36362352. Its totient is φ = 12586896.

The previous prime is 22027129. The next prime is 22027139. The reversal of 22027131 is 13172022.

22027131 = 243² + 244² + ... + 431².

It is not a de Polignac number, because 22027131 - 2¹ = 22027129 is a prime.

It is a super-2 number, since 2×22027131² = 970389000182322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22027139) 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, 174756 + ... + 174881.

It is an arithmetic number, because the mean of its divisors is an integer number (3030196).

Almost surely, 2^22027131 is an apocalyptic number.

22027131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22027131 is a deficient number, since it is larger than the sum of its proper divisors (14335221).

22027131 is a wasteful number, since it uses less digits than its factorization.

22027131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349650 (or 349647 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 22027131 is about 4693.3070430135. The cubic root of 22027131 is about 280.3190707922.

Adding to 22027131 its reverse (13172022), we get a palindrome (35199153).

The spelling of 22027131 in words is "twenty-two million, twenty-seven thousand, one hundred thirty-one".