12420331103 has 4 divisors (see below), whose sum is σ = 13074032760. Its totient is φ = 11766629448.

The previous prime is 12420331081. The next prime is 12420331153. The reversal of 12420331103 is 30113302421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12420331103 - 2²⁴ = 12403553887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420331153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326850800 + ... + 326850837.

It is an arithmetic number, because the mean of its divisors is an integer number (3268508190).

Almost surely, 2^12420331103 is an apocalyptic number.

12420331103 is a deficient number, since it is larger than the sum of its proper divisors (653701657).

12420331103 is an equidigital number, since it uses as much as digits as its factorization.

12420331103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653701656.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12420331103 its reverse (30113302421), we get a palindrome (42533633524).

The spelling of 12420331103 in words is "twelve billion, four hundred twenty million, three hundred thirty-one thousand, one hundred three".