2221322240 has 52 divisors (see below), whose sum is σ = 5330571744. Its totient is φ = 888520704.

The previous prime is 2221322219. The next prime is 2221322261. The reversal of 2221322240 is 422231222.

It is an interprime number because it is at equal distance from previous prime (2221322219) and next prime (2221322261).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33752 + ... + 74711.

Almost surely, 2^2221322240 is an apocalyptic number.

2221322240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221322240 is an abundant number, since it is smaller than the sum of its proper divisors (3109249504).

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

2221322240 is an equidigital number, since it uses as much as digits as its factorization.

2221322240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108492 (or 108470 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2221322240 is about 47130.9053594348. The cubic root of 2221322240 is about 1304.7796910384.

Adding to 2221322240 its reverse (422231222), we get a palindrome (2643553462).

The spelling of 2221322240 in words is "two billion, two hundred twenty-one million, three hundred twenty-two thousand, two hundred forty".