12420622277 has 4 divisors (see below), whose sum is σ = 14194996896. Its totient is φ = 10646247660.

The previous prime is 12420622261. The next prime is 12420622289. The reversal of 12420622277 is 77222602421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12420622277 - 2⁴ = 12420622261 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 (12420622237) 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, 887187299 + ... + 887187312.

It is an arithmetic number, because the mean of its divisors is an integer number (3548749224).

Almost surely, 2^12420622277 is an apocalyptic number.

It is an amenable number.

12420622277 is a deficient number, since it is larger than the sum of its proper divisors (1774374619).

12420622277 is an equidigital number, since it uses as much as digits as its factorization.

12420622277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774374618.

The product of its (nonzero) digits is 37632, while the sum is 35.

The spelling of 12420622277 in words is "twelve billion, four hundred twenty million, six hundred twenty-two thousand, two hundred seventy-seven".