12215039 has 2 divisors, whose sum is σ = 12215040. Its totient is φ = 12215038.

The previous prime is 12215033. The next prime is 12215087. The reversal of 12215039 is 93051221.

It is a weak prime.

It is an emirp because it is prime and its reverse (93051221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12215039 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 (12215033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6107519 + 6107520.

It is an arithmetic number, because the mean of its divisors is an integer number (6107520).

Almost surely, 2^12215039 is an apocalyptic number.

12215039 is a deficient number, since it is larger than the sum of its proper divisors (1).

12215039 is an equidigital number, since it uses as much as digits as its factorization.

12215039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 12215039 is about 3495.0020028607. The cubic root of 12215039 is about 230.3023056972.

The spelling of 12215039 in words is "twelve million, two hundred fifteen thousand, thirty-nine".