12105574981 has 8 divisors (see below), whose sum is σ = 12644087040. Its totient is φ = 11568078192.

The previous prime is 12105574973. The next prime is 12105575023. The reversal of 12105574981 is 18947550121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12105574981 - 2³ = 12105574973 is a prime.

It is a super-2 number, since 2×12105574981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12105574181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229390 + ... + 277183.

It is an arithmetic number, because the mean of its divisors is an integer number (1580510880).

Almost surely, 2^12105574981 is an apocalyptic number.

It is an amenable number.

12105574981 is a deficient number, since it is larger than the sum of its proper divisors (538512059).

12105574981 is a wasteful number, since it uses less digits than its factorization.

12105574981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507635.

The product of its (nonzero) digits is 100800, while the sum is 43.

The spelling of 12105574981 in words is "twelve billion, one hundred five million, five hundred seventy-four thousand, nine hundred eighty-one".