12221777171 has 8 divisors (see below), whose sum is σ = 12368849040. Its totient is φ = 12074922112.

The previous prime is 12221777159. The next prime is 12221777233. The reversal of 12221777171 is 17177712221.

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 12221777171 - 2¹⁴ = 12221760787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221777101) 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, 60671 + ... + 167703.

It is an arithmetic number, because the mean of its divisors is an integer number (1546106130).

Almost surely, 2^12221777171 is an apocalyptic number.

12221777171 is a deficient number, since it is larger than the sum of its proper divisors (147071869).

12221777171 is a wasteful number, since it uses less digits than its factorization.

12221777171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108405.

The product of its digits is 19208, while the sum is 38.

The spelling of 12221777171 in words is "twelve billion, two hundred twenty-one million, seven hundred seventy-seven thousand, one hundred seventy-one".