12155102199 has 24 divisors (see below), whose sum is σ = 18489547440. Its totient is φ = 7673539968.

The previous prime is 12155102173. The next prime is 12155102209. The reversal of 12155102199 is 99120155121.

12155102199 is a `hidden beast` number, since 12 + 1 + 551 + 0 + 2 + 1 + 99 = 666.

It is not a de Polignac number, because 12155102199 - 2¹² = 12155098103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155102149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 409219 + ... + 437915.

It is an arithmetic number, because the mean of its divisors is an integer number (770397810).

Almost surely, 2^12155102199 is an apocalyptic number.

12155102199 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12155102199 is a deficient number, since it is larger than the sum of its proper divisors (6334445241).

12155102199 is a wasteful number, since it uses less digits than its factorization.

12155102199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31199 (or 31196 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 36.

The spelling of 12155102199 in words is "twelve billion, one hundred fifty-five million, one hundred two thousand, one hundred ninety-nine".