2221021120 has 28 divisors (see below), whose sum is σ = 5288807304. Its totient is φ = 888408320.

The previous prime is 2221021087. The next prime is 2221021129. The reversal of 2221021120 is 211201222.

It is a happy number.

It is a super-3 number, since 3×2221021120³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2221021120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221021129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3470026 + ... + 3470665.

Almost surely, 2^2221021120 is an apocalyptic number.

2221021120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221021120 is an abundant number, since it is smaller than the sum of its proper divisors (3067786184).

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

2221021120 is an equidigital number, since it uses as much as digits as its factorization.

2221021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6940708 (or 6940698 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2221021120 is about 47127.7107443169. The cubic root of 2221021120 is about 1304.7207302074.

Adding to 2221021120 its reverse (211201222), we get a palindrome (2432222342).

The spelling of 2221021120 in words is "two billion, two hundred twenty-one million, twenty-one thousand, one hundred twenty".