2221303331 has 32 divisors (see below), whose sum is σ = 2544030720. Its totient is φ = 1925570304.

The previous prime is 2221303307. The next prime is 2221303333. The reversal of 2221303331 is 1333031222.

It is a cyclic number.

It is not a de Polignac number, because 2221303331 - 2⁶ = 2221303267 is a prime.

It is a super-2 number, since 2×2221303331² = 9868376976623391122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221303333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1549391 + ... + 1550823.

It is an arithmetic number, because the mean of its divisors is an integer number (79500960).

Almost surely, 2^2221303331 is an apocalyptic number.

2221303331 is a deficient number, since it is larger than the sum of its proper divisors (322727389).

2221303331 is a wasteful number, since it uses less digits than its factorization.

2221303331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 2221303331 is about 47130.7047581510. The cubic root of 2221303331 is about 1304.7759887166.

Adding to 2221303331 its reverse (1333031222), we get a palindrome (3554334553).

The spelling of 2221303331 in words is "two billion, two hundred twenty-one million, three hundred three thousand, three hundred thirty-one".