22125131 has 8 divisors (see below), whose sum is σ = 25442304. Its totient is φ = 18847080.

The previous prime is 22125113. The next prime is 22125151. The reversal of 22125131 is 13152122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22125131 - 2¹⁰ = 22124107 is a prime.

It is a super-2 number, since 2×22125131² = 979042843534322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22125151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8555 + ... + 10836.

It is an arithmetic number, because the mean of its divisors is an integer number (3180288).

Almost surely, 2^22125131 is an apocalyptic number.

22125131 is a deficient number, since it is larger than the sum of its proper divisors (3317173).

22125131 is a wasteful number, since it uses less digits than its factorization.

22125131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19561.

The product of its digits is 120, while the sum is 17.

The square root of 22125131 is about 4703.7358556790. The cubic root of 22125131 is about 280.7341744646.

Adding to 22125131 its reverse (13152122), we get a palindrome (35277253).

It can be divided in two parts, 221 and 25131, that added together give a palindrome (25352).

The spelling of 22125131 in words is "twenty-two million, one hundred twenty-five thousand, one hundred thirty-one".