12233581 has 2 divisors, whose sum is σ = 12233582. Its totient is φ = 12233580.

The previous prime is 12233579. The next prime is 12233593. The reversal of 12233581 is 18533221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6786025 + 5447556 = 2605^2 + 2334^2 .

It is a cyclic number.

It is not a de Polignac number, because 12233581 - 2¹ = 12233579 is a prime.

It is a super-2 number, since 2×12233581² = 299321008167122, which contains 22 as substring.

Together with 12233579, it forms a pair of twin primes.

It is equal to p₈₀₂₃₈₄ and since 12233581 and 802384 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12233681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6116790 + 6116791.

It is an arithmetic number, because the mean of its divisors is an integer number (6116791).

Almost surely, 2^12233581 is an apocalyptic number.

It is an amenable number.

12233581 is a deficient number, since it is larger than the sum of its proper divisors (1).

12233581 is an equidigital number, since it uses as much as digits as its factorization.

12233581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 12233581 is about 3497.6536420864. The cubic root of 12233581 is about 230.4187770532.

The spelling of 12233581 in words is "twelve million, two hundred thirty-three thousand, five hundred eighty-one".