12320031121 has 8 divisors (see below), whose sum is σ = 13611901824. Its totient is φ = 11091178560.

The previous prime is 12320031107. The next prime is 12320031151. The reversal of 12320031121 is 12113002321.

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 12320031121 - 2⁹ = 12320030609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12320031095 and 12320031104.

It is not an unprimeable number, because it can be changed into a prime (12320031151) 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, 15754125 + ... + 15754906.

It is an arithmetic number, because the mean of its divisors is an integer number (1701487728).

Almost surely, 2^12320031121 is an apocalyptic number.

It is an amenable number.

12320031121 is a deficient number, since it is larger than the sum of its proper divisors (1291870703).

12320031121 is a wasteful number, since it uses less digits than its factorization.

12320031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31509071.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12320031121 its reverse (12113002321), we get a palindrome (24433033442).

The spelling of 12320031121 in words is "twelve billion, three hundred twenty million, thirty-one thousand, one hundred twenty-one".