22124251 has 2 divisors, whose sum is σ = 22124252. Its totient is φ = 22124250.

The previous prime is 22124209. The next prime is 22124269. The reversal of 22124251 is 15242122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22124251 - 2¹¹ = 22122203 is a prime.

It is a super-2 number, since 2×22124251² = 978964964622002, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22124281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11062125 + 11062126.

It is an arithmetic number, because the mean of its divisors is an integer number (11062126).

Almost surely, 2^22124251 is an apocalyptic number.

22124251 is a deficient number, since it is larger than the sum of its proper divisors (1).

22124251 is an equidigital number, since it uses as much as digits as its factorization.

22124251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 320, while the sum is 19.

The square root of 22124251 is about 4703.6423120811. The cubic root of 22124251 is about 280.7304524625.

Adding to 22124251 its reverse (15242122), we get a palindrome (37366373).

The spelling of 22124251 in words is "twenty-two million, one hundred twenty-four thousand, two hundred fifty-one".