12215663235 has 12 divisors (see below), whose sum is σ = 21173816352. Its totient is φ = 6515020368.

The previous prime is 12215663219. The next prime is 12215663297. The reversal of 12215663235 is 53236651221.

12215663235 is a `hidden beast` number, since 1 + 2 + 2 + 15 + 6 + 632 + 3 + 5 = 666.

It is not a de Polignac number, because 12215663235 - 2⁴ = 12215663219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12215663235.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135729547 + ... + 135729636.

It is an arithmetic number, because the mean of its divisors is an integer number (1764484696).

Almost surely, 2^12215663235 is an apocalyptic number.

12215663235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12215663235 is a deficient number, since it is larger than the sum of its proper divisors (8958153117).

12215663235 is a wasteful number, since it uses less digits than its factorization.

12215663235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271459194 (or 271459191 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The spelling of 12215663235 in words is "twelve billion, two hundred fifteen million, six hundred sixty-three thousand, two hundred thirty-five".