22442131 has 4 divisors (see below), whose sum is σ = 22510264. Its totient is φ = 22374000.

The previous prime is 22442117. The next prime is 22442149. The reversal of 22442131 is 13124422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13124422 = 2 ⋅6562211.

It is a cyclic number.

It is not a de Polignac number, because 22442131 - 2⁹ = 22441619 is a prime.

It is a super-2 number, since 2×22442131² = 1007298487642322, 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 = 22442099 and 22442108.

It is not an unprimeable number, because it can be changed into a prime (22442111) 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, 33570 + ... + 34231.

It is an arithmetic number, because the mean of its divisors is an integer number (5627566).

Almost surely, 2^22442131 is an apocalyptic number.

22442131 is a deficient number, since it is larger than the sum of its proper divisors (68133).

22442131 is an equidigital number, since it uses as much as digits as its factorization.

22442131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68132.

The product of its digits is 384, while the sum is 19.

The square root of 22442131 is about 4737.3126348173. The cubic root of 22442131 is about 282.0685705860.

Adding to 22442131 its reverse (13124422), we get a palindrome (35566553).

The spelling of 22442131 in words is "twenty-two million, four hundred forty-two thousand, one hundred thirty-one".