2221120320 has 56 divisors (see below), whose sum is σ = 7052060064. Its totient is φ = 592298496.

The previous prime is 2221120301. The next prime is 2221120393. The reversal of 2221120320 is 230211222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2221120320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1155874 + ... + 1157793.

It is an arithmetic number, because the mean of its divisors is an integer number (125929644).

Almost surely, 2^2221120320 is an apocalyptic number.

2221120320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221120320 is an abundant number, since it is smaller than the sum of its proper divisors (4830939744).

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

2221120320 is a wasteful number, since it uses less digits than its factorization.

2221120320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313687 (or 2313677 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2221120320 is about 47128.7631919192. The cubic root of 2221120320 is about 1304.7401546617.

Adding to 2221120320 its reverse (230211222), we get a palindrome (2451331542).

The spelling of 2221120320 in words is "two billion, two hundred twenty-one million, one hundred twenty thousand, three hundred twenty".