22212239 has 6 divisors (see below), whose sum is σ = 25838784. Its totient is φ = 19039020.

The previous prime is 22212233. The next prime is 22212257. The reversal of 22212239 is 93221222.

It is not a de Polignac number, because 22212239 - 2⁸ = 22211983 is a prime.

It is a super-2 number, since 2×22212239² = 986767122786242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 226607 + ... + 226704.

It is an arithmetic number, because the mean of its divisors is an integer number (4306464).

Almost surely, 2^22212239 is an apocalyptic number.

22212239 is a deficient number, since it is larger than the sum of its proper divisors (3626545).

22212239 is an equidigital number, since it uses as much as digits as its factorization.

22212239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453325 (or 453318 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 22212239 is about 4712.9862083397. The cubic root of 22212239 is about 281.1021145825.

The spelling of 22212239 in words is "twenty-two million, two hundred twelve thousand, two hundred thirty-nine".