12227120977 has 4 divisors (see below), whose sum is σ = 12870653680. Its totient is φ = 11583588276.

The previous prime is 12227120959. The next prime is 12227120999. The reversal of 12227120977 is 77902172221.

12227120977 is digitally balanced in base 2, 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77902172221 = 41 ⋅1900052981.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12227120977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12227120947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321766323 + ... + 321766360.

It is an arithmetic number, because the mean of its divisors is an integer number (3217663420).

Almost surely, 2^12227120977 is an apocalyptic number.

It is an amenable number.

12227120977 is a deficient number, since it is larger than the sum of its proper divisors (643532703).

12227120977 is an equidigital number, since it uses as much as digits as its factorization.

12227120977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643532702.

The product of its (nonzero) digits is 49392, while the sum is 40.

The spelling of 12227120977 in words is "twelve billion, two hundred twenty-seven million, one hundred twenty thousand, nine hundred seventy-seven".