12421372199 has 4 divisors (see below), whose sum is σ = 12424591536. Its totient is φ = 12418152864.

The previous prime is 12421372181. The next prime is 12421372213. The reversal of 12421372199 is 99127312421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99127312421 = 463 ⋅214097867.

It is a cyclic number.

It is not a de Polignac number, because 12421372199 - 2¹⁶ = 12421306663 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 (12421372109) 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, 1603874 + ... + 1611599.

It is an arithmetic number, because the mean of its divisors is an integer number (3106147884).

Almost surely, 2^12421372199 is an apocalyptic number.

12421372199 is a deficient number, since it is larger than the sum of its proper divisors (3219337).

12421372199 is an equidigital number, since it uses as much as digits as its factorization.

12421372199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3219336.

The product of its digits is 54432, while the sum is 41.

The spelling of 12421372199 in words is "twelve billion, four hundred twenty-one million, three hundred seventy-two thousand, one hundred ninety-nine".