2100221120 has 28 divisors (see below), whose sum is σ = 5001152304. Its totient is φ = 840088320.

The previous prime is 2100221119. The next prime is 2100221129. The reversal of 2100221120 is 211220012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2100221129) 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, 3281276 + ... + 3281915.

Almost surely, 2^2100221120 is an apocalyptic number.

2100221120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100221120 is an abundant number, since it is smaller than the sum of its proper divisors (2900931184).

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

2100221120 is an equidigital number, since it uses as much as digits as its factorization.

2100221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6563208 (or 6563198 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2100221120 is about 45828.1695030469. The cubic root of 2100221120 is about 1280.6241097061.

Adding to 2100221120 its reverse (211220012), we get a palindrome (2311441132).

The spelling of 2100221120 in words is "two billion, one hundred million, two hundred twenty-one thousand, one hundred twenty".