22236131 has 2 divisors, whose sum is σ = 22236132. Its totient is φ = 22236130.

The previous prime is 22236089. The next prime is 22236133. The reversal of 22236131 is 13163222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22236131 is a prime.

It is a super-2 number, since 2×22236131² = 988891043698322, which contains 22 as substring.

Together with 22236133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22236133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11118065 + 11118066.

It is an arithmetic number, because the mean of its divisors is an integer number (11118066).

Almost surely, 2^22236131 is an apocalyptic number.

22236131 is a deficient number, since it is larger than the sum of its proper divisors (1).

22236131 is an equidigital number, since it uses as much as digits as its factorization.

22236131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 20.

The square root of 22236131 is about 4715.5202258075. The cubic root of 22236131 is about 281.2028651217.

Adding to 22236131 its reverse (13163222), we get a palindrome (35399353).

The spelling of 22236131 in words is "twenty-two million, two hundred thirty-six thousand, one hundred thirty-one".