2200220221 has 4 divisors (see below), whose sum is σ = 2206867744. Its totient is φ = 2193572700.

The previous prime is 2200220213. The next prime is 2200220233. The reversal of 2200220221 is 1220220022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2200220221 - 2³ = 2200220213 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 (2200220261) 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, 3323265 + ... + 3323926.

It is an arithmetic number, because the mean of its divisors is an integer number (551716936).

Almost surely, 2^2200220221 is an apocalyptic number.

It is an amenable number.

2200220221 is a deficient number, since it is larger than the sum of its proper divisors (6647523).

2200220221 is an equidigital number, since it uses as much as digits as its factorization.

2200220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6647522.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 2200220221 is about 46906.5051032370. The cubic root of 2200220221 is about 1300.6348420018.

Adding to 2200220221 its reverse (1220220022), we get a palindrome (3420440243).

The spelling of 2200220221 in words is "two billion, two hundred million, two hundred twenty thousand, two hundred twenty-one".