2101120 has 96 divisors (see below), whose sum is σ = 5930280. Its totient is φ = 709632.

The previous prime is 2101111. The next prime is 2101123. The reversal of 2101120 is 211012.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31327 + ... + 31393.

2^2101120 is an apocalyptic number.

2101120 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 2101120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2965140).

2101120 is an abundant number, since it is smaller than the sum of its proper divisors (3829160).

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

2101120 is an equidigital number, since it uses as much as digits as its factorization.

2101120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 2101120 is about 1449.5240598210. The cubic root of 2101120 is about 128.0806783045.

Adding to 2101120 its reverse (211012), we get a palindrome (2312132).

The spelling of 2101120 in words is "two million, one hundred one thousand, one hundred twenty".