12215165423 has 2 divisors, whose sum is σ = 12215165424. Its totient is φ = 12215165422.

The previous prime is 12215165419. The next prime is 12215165437. The reversal of 12215165423 is 32456151221.

12215165423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12215165423 - 2² = 12215165419 is a prime.

It is a super-2 number, since 2×12215165423² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12215165423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12215165323) 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, 6107582711 + 6107582712.

It is an arithmetic number, because the mean of its divisors is an integer number (6107582712).

Almost surely, 2^12215165423 is an apocalyptic number.

12215165423 is a deficient number, since it is larger than the sum of its proper divisors (1).

12215165423 is an equidigital number, since it uses as much as digits as its factorization.

12215165423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 32.

The spelling of 12215165423 in words is "twelve billion, two hundred fifteen million, one hundred sixty-five thousand, four hundred twenty-three".