12204872121 has 8 divisors (see below), whose sum is σ = 17524944640. Its totient is φ = 7510690512.

The previous prime is 12204872089. The next prime is 12204872137. The reversal of 12204872121 is 12127840221.

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

It is not a de Polignac number, because 12204872121 - 2⁵ = 12204872089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12204872161) 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, 156472681 + ... + 156472758.

It is an arithmetic number, because the mean of its divisors is an integer number (2190618080).

Almost surely, 2^12204872121 is an apocalyptic number.

It is an amenable number.

12204872121 is a deficient number, since it is larger than the sum of its proper divisors (5320072519).

12204872121 is a wasteful number, since it uses less digits than its factorization.

12204872121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312945455.

The product of its (nonzero) digits is 3584, while the sum is 30.

The spelling of 12204872121 in words is "twelve billion, two hundred four million, eight hundred seventy-two thousand, one hundred twenty-one".