22223291 has 2 divisors, whose sum is σ = 22223292. Its totient is φ = 22223290.

The previous prime is 22223287. The next prime is 22223323. The reversal of 22223291 is 19232222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22223291 - 2² = 22223287 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22223231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111645 + 11111646.

It is an arithmetic number, because the mean of its divisors is an integer number (11111646).

Almost surely, 2^22223291 is an apocalyptic number.

22223291 is a deficient number, since it is larger than the sum of its proper divisors (1).

22223291 is an equidigital number, since it uses as much as digits as its factorization.

22223291 is an evil number, because the sum of its binary digits is even.

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

The square root of 22223291 is about 4714.1585675495. The cubic root of 22223291 is about 281.1487289054.

The spelling of 22223291 in words is "twenty-two million, two hundred twenty-three thousand, two hundred ninety-one".