2100113145 has 72 divisors (see below), whose sum is σ = 3960178560. Its totient is φ = 1029075840.

The previous prime is 2100113143. The next prime is 2100113203. The reversal of 2100113145 is 5413110012.

It is not a de Polignac number, because 2100113145 - 2¹ = 2100113143 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2100113143) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2060446 + ... + 2061464.

It is an arithmetic number, because the mean of its divisors is an integer number (55002480).

Almost surely, 2^2100113145 is an apocalyptic number.

It is an amenable number.

2100113145 is a deficient number, since it is larger than the sum of its proper divisors (1860065415).

2100113145 is a wasteful number, since it uses less digits than its factorization.

2100113145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327 (or 1311 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 2100113145 is about 45826.9914460899. The cubic root of 2100113145 is about 1280.6021631665.

Adding to 2100113145 its reverse (5413110012), we get a palindrome (7513223157).

The spelling of 2100113145 in words is "two billion, one hundred million, one hundred thirteen thousand, one hundred forty-five".