22456219 has 2 divisors, whose sum is σ = 22456220. Its totient is φ = 22456218.

The previous prime is 22456207. The next prime is 22456223. The reversal of 22456219 is 91265422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22456219 - 2¹¹ = 22454171 is a prime.

It is a super-2 number, since 2×22456219² = 1008563543551922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22456229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11228109 + 11228110.

It is an arithmetic number, because the mean of its divisors is an integer number (11228110).

Almost surely, 2^22456219 is an apocalyptic number.

22456219 is a deficient number, since it is larger than the sum of its proper divisors (1).

22456219 is an equidigital number, since it uses as much as digits as its factorization.

22456219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 31.

The square root of 22456219 is about 4738.7993205030. The cubic root of 22456219 is about 282.1275808883.

It can be divided in two parts, 2245 and 6219, that added together give a square (8464 = 92²).

The spelling of 22456219 in words is "twenty-two million, four hundred fifty-six thousand, two hundred nineteen".