12220844399 has 4 divisors (see below), whose sum is σ = 12392969040. Its totient is φ = 12048719760.

The previous prime is 12220844353. The next prime is 12220844401. The reversal of 12220844399 is 99344802221.

It is a happy number.

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 12220844399 - 2⁸ = 12220844143 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 (12220844309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86062214 + ... + 86062355.

It is an arithmetic number, because the mean of its divisors is an integer number (3098242260).

Almost surely, 2^12220844399 is an apocalyptic number.

12220844399 is a deficient number, since it is larger than the sum of its proper divisors (172124641).

12220844399 is an equidigital number, since it uses as much as digits as its factorization.

12220844399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172124640.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 12220844399 in words is "twelve billion, two hundred twenty million, eight hundred forty-four thousand, three hundred ninety-nine".