2102221120 has 28 divisors (see below), whose sum is σ = 5005914804. Its totient is φ = 840888320.

The previous prime is 2102221117. The next prime is 2102221129. The reversal of 2102221120 is 211222012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1465970944 + 636250176 = 38288^2 + 25224^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2102221120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102221129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3284401 + ... + 3285040.

Almost surely, 2^2102221120 is an apocalyptic number.

2102221120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102221120 is an abundant number, since it is smaller than the sum of its proper divisors (2903693684).

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

2102221120 is an equidigital number, since it uses as much as digits as its factorization.

2102221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6569458 (or 6569448 counting only the distinct ones).

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

The square root of 2102221120 is about 45849.9849509245. The cubic root of 2102221120 is about 1281.0304852722.

Adding to 2102221120 its reverse (211222012), we get a palindrome (2313443132).

The spelling of 2102221120 in words is "two billion, one hundred two million, two hundred twenty-one thousand, one hundred twenty".