2101125 has 32 divisors (see below), whose sum is σ = 3773952. Its totient is φ = 1032000.

The previous prime is 2101123. The next prime is 2101129. The reversal of 2101125 is 5211012.

It is not a de Polignac number, because 2101125 - 2¹ = 2101123 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101125.

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 31 ways as a sum of consecutive naturals, for example, 4660 + ... + 5090.

It is an arithmetic number, because the mean of its divisors is an integer number (117936).

2^2101125 is an apocalyptic number.

2101125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2101125 is a deficient number, since it is larger than the sum of its proper divisors (1672827).

2101125 is a wasteful number, since it uses less digits than its factorization.

2101125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 452 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 2101125 is about 1449.5257845240. The cubic root of 2101125 is about 128.0807799016.

Adding to 2101125 its reverse (5211012), we get a palindrome (7312137).

The spelling of 2101125 in words is "two million, one hundred one thousand, one hundred twenty-five".