12215156419 has 2 divisors, whose sum is σ = 12215156420. Its totient is φ = 12215156418.

The previous prime is 12215156413. The next prime is 12215156423. The reversal of 12215156419 is 91465151221.

12215156419 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12215156419 is a prime.

It is a super-2 number, since 2×12215156419² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12215156413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6107578209 + 6107578210.

It is an arithmetic number, because the mean of its divisors is an integer number (6107578210).

Almost surely, 2^12215156419 is an apocalyptic number.

12215156419 is a deficient number, since it is larger than the sum of its proper divisors (1).

12215156419 is an equidigital number, since it uses as much as digits as its factorization.

12215156419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 37.

The spelling of 12215156419 in words is "twelve billion, two hundred fifteen million, one hundred fifty-six thousand, four hundred nineteen".