2100220220 has 96 divisors (see below), whose sum is σ = 5169225600. Its totient is φ = 701927424.

The previous prime is 2100220217. The next prime is 2100220231. The reversal of 2100220220 is 220220012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 908426 + ... + 910734.

It is an arithmetic number, because the mean of its divisors is an integer number (53846100).

Almost surely, 2^2100220220 is an apocalyptic number.

2100220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100220220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2584612800).

2100220220 is an abundant number, since it is smaller than the sum of its proper divisors (3069005380).

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

2100220220 is a wasteful number, since it uses less digits than its factorization.

2100220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2487 (or 2485 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2100220220 is about 45828.1596837578. The cubic root of 2100220220 is about 1280.6239267790.

Adding to 2100220220 its reverse (220220012), we get a palindrome (2320440232).

The spelling of 2100220220 in words is "two billion, one hundred million, two hundred twenty thousand, two hundred twenty".