12266213 has 2 divisors, whose sum is σ = 12266214. Its totient is φ = 12266212.

The previous prime is 12266209. The next prime is 12266237. The reversal of 12266213 is 31266221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12264004 + 2209 = 3502^2 + 47^2 .

It is a cyclic number.

It is not a de Polignac number, because 12266213 - 2² = 12266209 is a prime.

It is a super-2 number, since 2×12266213² = 300919962722738, which contains 22 as substring.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12296213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6133106 + 6133107.

It is an arithmetic number, because the mean of its divisors is an integer number (6133107).

Almost surely, 2^12266213 is an apocalyptic number.

It is an amenable number.

12266213 is a deficient number, since it is larger than the sum of its proper divisors (1).

12266213 is an equidigital number, since it uses as much as digits as its factorization.

12266213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 12266213 is about 3502.3153770042. The cubic root of 12266213 is about 230.6234690938.

The spelling of 12266213 in words is "twelve million, two hundred sixty-six thousand, two hundred thirteen".