2221221199 has 4 divisors (see below), whose sum is σ = 2221717464. Its totient is φ = 2220724936.

The previous prime is 2221221193. The next prime is 2221221209. The reversal of 2221221199 is 9911221222.

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 2221221199 - 2¹⁹ = 2220696911 is a prime.

It is a super-2 number, since 2×2221221199² = 9867647229773995202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221221199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221221193) 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, 241357 + ... + 250390.

It is an arithmetic number, because the mean of its divisors is an integer number (555429366).

Almost surely, 2^2221221199 is an apocalyptic number.

2221221199 is a deficient number, since it is larger than the sum of its proper divisors (496265).

2221221199 is an equidigital number, since it uses as much as digits as its factorization.

2221221199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496264.

The product of its digits is 2592, while the sum is 31.

The square root of 2221221199 is about 47129.8334285196. The cubic root of 2221221199 is about 1304.7599072896.

The spelling of 2221221199 in words is "two billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred ninety-nine".