22132231 has 12 divisors (see below), whose sum is σ = 24581592. Its totient is φ = 19910000.

The previous prime is 22132223. The next prime is 22132237. The reversal of 22132231 is 13223122.

It is not a de Polignac number, because 22132231 - 2³ = 22132223 is a prime.

It is a super-2 number, since 2×22132231² = 979671298074722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22132237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11316 + ... + 13126.

It is an arithmetic number, because the mean of its divisors is an integer number (2048466).

Almost surely, 2^22132231 is an apocalyptic number.

22132231 is a deficient number, since it is larger than the sum of its proper divisors (2449361).

22132231 is a wasteful number, since it uses less digits than its factorization.

22132231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934 (or 1923 counting only the distinct ones).

The product of its digits is 144, while the sum is 16.

The square root of 22132231 is about 4704.4905143915. The cubic root of 22132231 is about 280.7642006441.

Adding to 22132231 its reverse (13223122), we get a palindrome (35355353).

It can be divided in two parts, 2213 and 2231, that added together give a palindrome (4444).

The spelling of 22132231 in words is "twenty-two million, one hundred thirty-two thousand, two hundred thirty-one".