12420213403 has 12 divisors (see below), whose sum is σ = 13453196688. Its totient is φ = 11461326240.

The previous prime is 12420213383. The next prime is 12420213431. The reversal of 12420213403 is 30431202421.

It is not a de Polignac number, because 12420213403 - 2²⁵ = 12386658971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12420213433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 668013 + ... + 686353.

It is an arithmetic number, because the mean of its divisors is an integer number (1121099724).

Almost surely, 2^12420213403 is an apocalyptic number.

12420213403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12420213403 is a deficient number, since it is larger than the sum of its proper divisors (1032983285).

12420213403 is a wasteful number, since it uses less digits than its factorization.

12420213403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22374 (or 22361 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12420213403 its reverse (30431202421), we get a palindrome (42851415824).

The spelling of 12420213403 in words is "twelve billion, four hundred twenty million, two hundred thirteen thousand, four hundred three".