12421773206 has 4 divisors (see below), whose sum is σ = 18632659812. Its totient is φ = 6210886602.

The previous prime is 12421773173. The next prime is 12421773269. The reversal of 12421773206 is 60237712421.

12421773206 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3105443300 + ... + 3105443303.

It is an arithmetic number, because the mean of its divisors is an integer number (4658164953).

Almost surely, 2^12421773206 is an apocalyptic number.

12421773206 is a deficient number, since it is larger than the sum of its proper divisors (6210886606).

12421773206 is an equidigital number, since it uses as much as digits as its factorization.

12421773206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6210886605.

The product of its (nonzero) digits is 28224, while the sum is 35.

The spelling of 12421773206 in words is "twelve billion, four hundred twenty-one million, seven hundred seventy-three thousand, two hundred six".