2101102220 has 48 divisors (see below), whose sum is σ = 5068838208. Its totient is φ = 716636160.

The previous prime is 2101102217. The next prime is 2101102247. The reversal of 2101102220 is 222011012.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11861 + ... + 65900.

It is an arithmetic number, because the mean of its divisors is an integer number (105600796).

Almost surely, 2^2101102220 is an apocalyptic number.

2101102220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101102220 is an abundant number, since it is smaller than the sum of its proper divisors (2967735988).

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

2101102220 is a wasteful number, since it uses less digits than its factorization.

2101102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77970 (or 77968 counting only the distinct ones).

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

The square root of 2101102220 is about 45837.7815780825. The cubic root of 2101102220 is about 1280.8031702403.

Adding to 2101102220 its reverse (222011012), we get a palindrome (2323113232).

The spelling of 2101102220 in words is "two billion, one hundred one million, one hundred two thousand, two hundred twenty".