2221322399 has 4 divisors (see below), whose sum is σ = 2223413136. Its totient is φ = 2219231664.

The previous prime is 2221322377. The next prime is 2221322429. The reversal of 2221322399 is 9932231222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221322399 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 (2221322339) 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, 1043774 + ... + 1045899.

It is an arithmetic number, because the mean of its divisors is an integer number (555853284).

Almost surely, 2^2221322399 is an apocalyptic number.

2221322399 is a deficient number, since it is larger than the sum of its proper divisors (2090737).

2221322399 is a wasteful number, since it uses less digits than its factorization.

2221322399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090736.

The product of its digits is 23328, while the sum is 35.

The square root of 2221322399 is about 47130.9070462260. The cubic root of 2221322399 is about 1304.7797221700.

The spelling of 2221322399 in words is "two billion, two hundred twenty-one million, three hundred twenty-two thousand, three hundred ninety-nine".