12233681 has 2 divisors, whose sum is σ = 12233682. Its totient is φ = 12233680.

The previous prime is 12233657. The next prime is 12233699. The reversal of 12233681 is 18633221.

12233681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7756225 + 4477456 = 2785^2 + 2116^2 .

It is an emirp because it is prime and its reverse (18633221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12233681 - 2¹⁸ = 11971537 is a prime.

It is a super-2 number, since 2×12233681² = 299325901619522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12233681.

It is not a weakly prime, because it can be changed into another prime (12233651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6116840 + 6116841.

It is an arithmetic number, because the mean of its divisors is an integer number (6116841).

Almost surely, 2^12233681 is an apocalyptic number.

It is an amenable number.

12233681 is a deficient number, since it is larger than the sum of its proper divisors (1).

12233681 is an equidigital number, since it uses as much as digits as its factorization.

12233681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 12233681 is about 3497.6679373548. The cubic root of 12233681 is about 230.4194048829.

The spelling of 12233681 in words is "twelve million, two hundred thirty-three thousand, six hundred eighty-one".