2101043125 has 20 divisors (see below), whose sum is σ = 2649636220. Its totient is φ = 1665360000.

The previous prime is 2101043117. The next prime is 2101043129. The reversal of 2101043125 is 5213401012.

It can be written as a sum of positive squares in 10 ways, for example, as 1091773764 + 1009269361 = 33042^2 + 31769^2 .

It is not a de Polignac number, because 2101043125 - 2³ = 2101043117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101043129) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52705 + ... + 83545.

It is an arithmetic number, because the mean of its divisors is an integer number (132481811).

Almost surely, 2^2101043125 is an apocalyptic number.

2101043125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2101043125 is a deficient number, since it is larger than the sum of its proper divisors (548593095).

2101043125 is an equidigital number, since it uses as much as digits as its factorization.

2101043125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30970 (or 30955 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2101043125 is about 45837.1369633837. The cubic root of 2101043125 is about 1280.7911622932.

Adding to 2101043125 its reverse (5213401012), we get a palindrome (7314444137).

The spelling of 2101043125 in words is "two billion, one hundred one million, forty-three thousand, one hundred twenty-five".