12221909183 has 4 divisors (see below), whose sum is σ = 13332991848. Its totient is φ = 11110826520.

The previous prime is 12221909179. The next prime is 12221909191. The reversal of 12221909183 is 38190912221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12221909183 - 2² = 12221909179 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221909113) 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, 555541316 + ... + 555541337.

It is an arithmetic number, because the mean of its divisors is an integer number (3333247962).

Almost surely, 2^12221909183 is an apocalyptic number.

12221909183 is a deficient number, since it is larger than the sum of its proper divisors (1111082665).

12221909183 is a wasteful number, since it uses less digits than its factorization.

12221909183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111082664.

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 12221909183 in words is "twelve billion, two hundred twenty-one million, nine hundred nine thousand, one hundred eighty-three".