22232993 has 2 divisors, whose sum is σ = 22232994. Its totient is φ = 22232992.

The previous prime is 22232963. The next prime is 22233017. The reversal of 22232993 is 39923222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18515809 + 3717184 = 4303^2 + 1928^2 .

It is a cyclic number.

It is not a de Polignac number, because 22232993 - 2⁶ = 22232929 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22232933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11116496 + 11116497.

It is an arithmetic number, because the mean of its divisors is an integer number (11116497).

Almost surely, 2^22232993 is an apocalyptic number.

It is an amenable number.

22232993 is a deficient number, since it is larger than the sum of its proper divisors (1).

22232993 is an equidigital number, since it uses as much as digits as its factorization.

22232993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 32.

The square root of 22232993 is about 4715.1874830170. The cubic root of 22232993 is about 281.1896365598.

The spelling of 22232993 in words is "twenty-two million, two hundred thirty-two thousand, nine hundred ninety-three".