22220131 has 2 divisors, whose sum is σ = 22220132. Its totient is φ = 22220130.

The previous prime is 22220117. The next prime is 22220137. The reversal of 22220131 is 13102222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22220131 - 2¹¹ = 22218083 is a prime.

It is a super-2 number, since 2×22220131² = 987468443314322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22220137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110065 + 11110066.

It is an arithmetic number, because the mean of its divisors is an integer number (11110066).

Almost surely, 2^22220131 is an apocalyptic number.

22220131 is a deficient number, since it is larger than the sum of its proper divisors (1).

22220131 is an equidigital number, since it uses as much as digits as its factorization.

22220131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 22220131 is about 4713.8233950796. The cubic root of 22220131 is about 281.1354024649.

Adding to 22220131 its reverse (13102222), we get a palindrome (35322353).

The spelling of 22220131 in words is "twenty-two million, two hundred twenty thousand, one hundred thirty-one".