12213893 has 2 divisors, whose sum is σ = 12213894. Its totient is φ = 12213892.

The previous prime is 12213881. The next prime is 12213913. The reversal of 12213893 is 39831221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11546404 + 667489 = 3398^2 + 817^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213893 - 2¹⁸ = 11951749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12213823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106946 + 6106947.

It is an arithmetic number, because the mean of its divisors is an integer number (6106947).

Almost surely, 2^12213893 is an apocalyptic number.

It is an amenable number.

12213893 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213893 is an equidigital number, since it uses as much as digits as its factorization.

12213893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

The square root of 12213893 is about 3494.8380506112. The cubic root of 12213893 is about 230.2951032452.

The spelling of 12213893 in words is "twelve million, two hundred thirteen thousand, eight hundred ninety-three".