22123237 has 2 divisors, whose sum is σ = 22123238. Its totient is φ = 22123236.

The previous prime is 22123187. The next prime is 22123247. The reversal of 22123237 is 73232122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17986081 + 4137156 = 4241^2 + 2034^2 .

It is a cyclic number.

It is not a de Polignac number, because 22123237 - 2¹⁵ = 22090469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22123247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11061618 + 11061619.

It is an arithmetic number, because the mean of its divisors is an integer number (11061619).

Almost surely, 2^22123237 is an apocalyptic number.

It is an amenable number.

22123237 is a deficient number, since it is larger than the sum of its proper divisors (1).

22123237 is an equidigital number, since it uses as much as digits as its factorization.

22123237 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 22123237 is about 4703.5345220377. The cubic root of 22123237 is about 280.7261635787.

Adding to 22123237 its reverse (73232122), we get a palindrome (95355359).

The spelling of 22123237 in words is "twenty-two million, one hundred twenty-three thousand, two hundred thirty-seven".