12241213 has 2 divisors, whose sum is σ = 12241214. Its totient is φ = 12241212.

The previous prime is 12241183. The next prime is 12241217. The reversal of 12241213 is 31214221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9012004 + 3229209 = 3002^2 + 1797^2 .

It is a cyclic number.

It is not a de Polignac number, because 12241213 - 2²¹ = 10144061 is a prime.

It is a super-2 number, since 2×12241213² = 299694591422738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12241217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6120606 + 6120607.

It is an arithmetic number, because the mean of its divisors is an integer number (6120607).

Almost surely, 2^12241213 is an apocalyptic number.

It is an amenable number.

12241213 is a deficient number, since it is larger than the sum of its proper divisors (1).

12241213 is an equidigital number, since it uses as much as digits as its factorization.

12241213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 16.

The square root of 12241213 is about 3498.7444890989. The cubic root of 12241213 is about 230.4666831825.

Adding to 12241213 its reverse (31214221), we get a palindrome (43455434).

The spelling of 12241213 in words is "twelve million, two hundred forty-one thousand, two hundred thirteen".