12213037 has 2 divisors, whose sum is σ = 12213038. Its totient is φ = 12213036.

The previous prime is 12213017. The next prime is 12213049. The reversal of 12213037 is 73031221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11703241 + 509796 = 3421^2 + 714^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12213037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12213007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106518 + 6106519.

It is an arithmetic number, because the mean of its divisors is an integer number (6106519).

Almost surely, 2^12213037 is an apocalyptic number.

It is an amenable number.

12213037 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213037 is an equidigital number, since it uses as much as digits as its factorization.

12213037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 12213037 is about 3494.7155821325. The cubic root of 12213037 is about 230.2897231093.

Adding to 12213037 its reverse (73031221), we get a palindrome (85244258).

The spelling of 12213037 in words is "twelve million, two hundred thirteen thousand, thirty-seven".