12320012121 has 8 divisors (see below), whose sum is σ = 16427698560. Its totient is φ = 8212833552.

The previous prime is 12320012051. The next prime is 12320012147. The reversal of 12320012121 is 12121002321.

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

It is not a de Polignac number, because 12320012121 - 2¹⁰ = 12320011097 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12320012121.

It is not an unprimeable number, because it can be changed into a prime (12320012171) 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, 66210 + ... + 170363.

It is an arithmetic number, because the mean of its divisors is an integer number (2053462320).

Almost surely, 2^12320012121 is an apocalyptic number.

It is an amenable number.

12320012121 is a deficient number, since it is larger than the sum of its proper divisors (4107686439).

12320012121 is a wasteful number, since it uses less digits than its factorization.

12320012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253935.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12320012121 its reverse (12121002321), we get a palindrome (24441014442).

The spelling of 12320012121 in words is "twelve billion, three hundred twenty million, twelve thousand, one hundred twenty-one".