12420777271 has 8 divisors (see below), whose sum is σ = 14578827680. Its totient is φ = 10358640288.

The previous prime is 12420777263. The next prime is 12420777289. The reversal of 12420777271 is 17277702421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12420777271 - 2³ = 12420777263 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 (12420777221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23978076 + ... + 23978593.

It is an arithmetic number, because the mean of its divisors is an integer number (1822353460).

Almost surely, 2^12420777271 is an apocalyptic number.

12420777271 is a deficient number, since it is larger than the sum of its proper divisors (2158050409).

12420777271 is an equidigital number, since it uses as much as digits as its factorization.

12420777271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47956713.

The product of its (nonzero) digits is 76832, while the sum is 40.

The spelling of 12420777271 in words is "twelve billion, four hundred twenty million, seven hundred seventy-seven thousand, two hundred seventy-one".