22122131 has 4 divisors (see below), whose sum is σ = 22341264. Its totient is φ = 21903000.

The previous prime is 22122103. The next prime is 22122169. The reversal of 22122131 is 13122122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22122131 - 2¹⁸ = 21859987 is a prime.

It is a super-2 number, since 2×22122131² = 978777359962322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22122731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109415 + ... + 109616.

It is an arithmetic number, because the mean of its divisors is an integer number (5585316).

Almost surely, 2^22122131 is an apocalyptic number.

22122131 is a deficient number, since it is larger than the sum of its proper divisors (219133).

22122131 is a wasteful number, since it uses less digits than its factorization.

22122131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219132.

The product of its digits is 48, while the sum is 14.

The square root of 22122131 is about 4703.4169494103. The cubic root of 22122131 is about 280.7214854159.

Adding to 22122131 its reverse (13122122), we get a palindrome (35244253).

Subtracting from 22122131 its reverse (13122122), we obtain a palindrome (9000009).

It can be divided in two parts, 22122 and 131, that multiplied together give a palindrome (2897982).

The spelling of 22122131 in words is "twenty-two million, one hundred twenty-two thousand, one hundred thirty-one".