12105500234 has 24 divisors (see below), whose sum is σ = 18734351328. Its totient is φ = 5866421040.

The previous prime is 12105500227. The next prime is 12105500237. The reversal of 12105500234 is 43200550121.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12105500237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 711689 + ... + 728499.

It is an arithmetic number, because the mean of its divisors is an integer number (780597972).

Almost surely, 2^12105500234 is an apocalyptic number.

12105500234 is a deficient number, since it is larger than the sum of its proper divisors (6628851094).

12105500234 is a wasteful number, since it uses less digits than its factorization.

12105500234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17150 (or 17113 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 12105500234 in words is "twelve billion, one hundred five million, five hundred thousand, two hundred thirty-four".