12223566785 has 16 divisors (see below), whose sum is σ = 15021266304. Its totient is φ = 9543889152.

The previous prime is 12223566781. The next prime is 12223566811. The reversal of 12223566785 is 58766532221.

It is a cyclic number.

It is not a de Polignac number, because 12223566785 - 2² = 12223566781 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12223566781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258329 + ... + 301961.

It is an arithmetic number, because the mean of its divisors is an integer number (938829144).

Almost surely, 2^12223566785 is an apocalyptic number.

It is an amenable number.

12223566785 is a deficient number, since it is larger than the sum of its proper divisors (2797699519).

12223566785 is a wasteful number, since it uses less digits than its factorization.

12223566785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44984.

The product of its digits is 1209600, while the sum is 47.

The spelling of 12223566785 in words is "twelve billion, two hundred twenty-three million, five hundred sixty-six thousand, seven hundred eighty-five".