2101404220 has 12 divisors (see below), whose sum is σ = 4412948904. Its totient is φ = 840561680.

The previous prime is 2101404211. The next prime is 2101404271. The reversal of 2101404220 is 224041012.

It is a junction number, because it is equal to n+sod(n) for n = 2101404194 and 2101404203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52535086 + ... + 52535125.

It is an arithmetic number, because the mean of its divisors is an integer number (367745742).

Almost surely, 2^2101404220 is an apocalyptic number.

2101404220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101404220 is an abundant number, since it is smaller than the sum of its proper divisors (2311544684).

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

2101404220 is a wasteful number, since it uses less digits than its factorization.

2101404220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105070220 (or 105070218 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2101404220 is about 45841.0756854592. The cubic root of 2101404220 is about 1280.8645323234.

Adding to 2101404220 its reverse (224041012), we get a palindrome (2325445232).

The spelling of 2101404220 in words is "two billion, one hundred one million, four hundred four thousand, two hundred twenty".