2221332331 has 4 divisors (see below), whose sum is σ = 2221921152. Its totient is φ = 2220743512.

The previous prime is 2221332307. The next prime is 2221332371. The reversal of 2221332331 is 1332331222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1332331222 = 2 ⋅666165611.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221332331 is a prime.

It is a super-2 number, since 2×2221332331² = 9868634649491787122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221332371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288715 + ... + 296308.

It is an arithmetic number, because the mean of its divisors is an integer number (555480288).

Almost surely, 2^2221332331 is an apocalyptic number.

2221332331 is a deficient number, since it is larger than the sum of its proper divisors (588821).

2221332331 is an equidigital number, since it uses as much as digits as its factorization.

2221332331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588820.

The product of its digits is 1296, while the sum is 22.

The square root of 2221332331 is about 47131.0124122111. The cubic root of 2221332331 is about 1304.7816668154.

Adding to 2221332331 its reverse (1332331222), we get a palindrome (3553663553).

The spelling of 2221332331 in words is "two billion, two hundred twenty-one million, three hundred thirty-two thousand, three hundred thirty-one".