22011239 has 2 divisors, whose sum is σ = 22011240. Its totient is φ = 22011238.

The previous prime is 22011221. The next prime is 22011247. The reversal of 22011239 is 93211022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22011239 - 2⁸ = 22010983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22011239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22011439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11005619 + 11005620.

It is an arithmetic number, because the mean of its divisors is an integer number (11005620).

Almost surely, 2^22011239 is an apocalyptic number.

22011239 is a deficient number, since it is larger than the sum of its proper divisors (1).

22011239 is an equidigital number, since it uses as much as digits as its factorization.

22011239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 22011239 is about 4691.6136882740. The cubic root of 22011239 is about 280.2516402759.

The spelling of 22011239 in words is "twenty-two million, eleven thousand, two hundred thirty-nine".