12155522419 has 2 divisors, whose sum is σ = 12155522420. Its totient is φ = 12155522418.

The previous prime is 12155522341. The next prime is 12155522453. The reversal of 12155522419 is 91422555121.

12155522419 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 not a de Polignac number, because 12155522419 - 2⁹ = 12155521907 is a prime.

It is a super-2 number, since 2×12155522419² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12155552419) 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, 6077761209 + 6077761210.

It is an arithmetic number, because the mean of its divisors is an integer number (6077761210).

Almost surely, 2^12155522419 is an apocalyptic number.

12155522419 is a deficient number, since it is larger than the sum of its proper divisors (1).

12155522419 is an equidigital number, since it uses as much as digits as its factorization.

12155522419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 37.

The spelling of 12155522419 in words is "twelve billion, one hundred fifty-five million, five hundred twenty-two thousand, four hundred nineteen".