12155600105 has 48 divisors (see below), whose sum is σ = 16364030592. Its totient is φ = 8660044800.

The previous prime is 12155600087. The next prime is 12155600111. The reversal of 12155600105 is 50100655121.

It is not a de Polignac number, because 12155600105 - 2⁸ = 12155599849 is a prime.

It is a super-2 number, since 2×12155600105² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6043550 + ... + 6045560.

It is an arithmetic number, because the mean of its divisors is an integer number (340917304).

Almost surely, 2^12155600105 is an apocalyptic number.

It is an amenable number.

12155600105 is a deficient number, since it is larger than the sum of its proper divisors (4208430487).

12155600105 is a wasteful number, since it uses less digits than its factorization.

12155600105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238 (or 2227 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 26.

The spelling of 12155600105 in words is "twelve billion, one hundred fifty-five million, six hundred thousand, one hundred five".