22131002 has 8 divisors (see below), whose sum is σ = 34341300. Its totient is φ = 10683904.

The previous prime is 22131001. The next prime is 22131017. The reversal of 22131002 is 20013122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20693401 + 1437601 = 4549^2 + 1199^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22131001) 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, 190727 + ... + 190842.

Almost surely, 2^22131002 is an apocalyptic number.

22131002 is a deficient number, since it is larger than the sum of its proper divisors (12210298).

22131002 is a wasteful number, since it uses less digits than its factorization.

22131002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381600.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 22131002 is about 4704.3598926953. The cubic root of 22131002 is about 280.7590036144.

Adding to 22131002 its reverse (20013122), we get a palindrome (42144124).

The spelling of 22131002 in words is "twenty-two million, one hundred thirty-one thousand, two".