2221320332 has 36 divisors (see below), whose sum is σ = 4933066824. Its totient is φ = 865448640.

The previous prime is 2221320319. The next prime is 2221320347. The reversal of 2221320332 is 2330231222.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 512993 + ... + 517304.

It is an arithmetic number, because the mean of its divisors is an integer number (137029634).

Almost surely, 2^2221320332 is an apocalyptic number.

2221320332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2221320332 is an abundant number, since it is smaller than the sum of its proper divisors (2711746492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221320332 is a wasteful number, since it uses less digits than its factorization.

2221320332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030326 (or 1030317 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 2221320332 is about 47130.8851179351. The cubic root of 2221320332 is about 1304.7793174591.

Adding to 2221320332 its reverse (2330231222), we get a palindrome (4551551554).

The spelling of 2221320332 in words is "two billion, two hundred twenty-one million, three hundred twenty thousand, three hundred thirty-two".