2221204331 has 4 divisors (see below), whose sum is σ = 2223343200. Its totient is φ = 2219065464.

The previous prime is 2221204303. The next prime is 2221204339. The reversal of 2221204331 is 1334021222.

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 2221204331 - 2⁶ = 2221204267 is a prime.

It is a super-2 number, since 2×2221204331² = 9867497360106315122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221204339) 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, 1067876 + ... + 1069953.

It is an arithmetic number, because the mean of its divisors is an integer number (555835800).

Almost surely, 2^2221204331 is an apocalyptic number.

2221204331 is a deficient number, since it is larger than the sum of its proper divisors (2138869).

2221204331 is a wasteful number, since it uses less digits than its factorization.

2221204331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138868.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2221204331 is about 47129.6544757120. The cubic root of 2221204331 is about 1304.7566044899.

Adding to 2221204331 its reverse (1334021222), we get a palindrome (3555225553).

The spelling of 2221204331 in words is "two billion, two hundred twenty-one million, two hundred four thousand, three hundred thirty-one".