23222137 has 2 divisors, whose sum is σ = 23222138. Its totient is φ = 23222136.

The previous prime is 23222099. The next prime is 23222141. The reversal of 23222137 is 73122232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11634921 + 11587216 = 3411^2 + 3404^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23222137 is a prime.

It is not a weakly prime, because it can be changed into another prime (23222167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11611068 + 11611069.

It is an arithmetic number, because the mean of its divisors is an integer number (11611069).

Almost surely, 2^23222137 is an apocalyptic number.

It is an amenable number.

23222137 is a deficient number, since it is larger than the sum of its proper divisors (1).

23222137 is an equidigital number, since it uses as much as digits as its factorization.

23222137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 22.

The square root of 23222137 is about 4818.9352558423. The cubic root of 23222137 is about 285.2993141464.

Adding to 23222137 its reverse (73122232), we get a palindrome (96344369).

The spelling of 23222137 in words is "twenty-three million, two hundred twenty-two thousand, one hundred thirty-seven".