22118233 has 2 divisors, whose sum is σ = 22118234. Its totient is φ = 22118232.

The previous prime is 22118227. The next prime is 22118237. The reversal of 22118233 is 33281122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18688329 + 3429904 = 4323^2 + 1852^2 .

It is a cyclic number.

It is not a de Polignac number, because 22118233 - 2²¹ = 20021081 is a prime.

It is not a weakly prime, because it can be changed into another prime (22118237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11059116 + 11059117.

It is an arithmetic number, because the mean of its divisors is an integer number (11059117).

Almost surely, 2^22118233 is an apocalyptic number.

It is an amenable number.

22118233 is a deficient number, since it is larger than the sum of its proper divisors (1).

22118233 is an equidigital number, since it uses as much as digits as its factorization.

22118233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 22.

The square root of 22118233 is about 4703.0025515621. The cubic root of 22118233 is about 280.7049963983.

Adding to 22118233 its reverse (33281122), we get a palindrome (55399355).

The spelling of 22118233 in words is "twenty-two million, one hundred eighteen thousand, two hundred thirty-three".