2100201253 has 4 divisors (see below), whose sum is σ = 2100314700. Its totient is φ = 2100087808.

The previous prime is 2100201247. The next prime is 2100201281. The reversal of 2100201253 is 3521020012.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 128663649 + 1971537604 = 11343^2 + 44402^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100201253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100201203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21778 + ... + 68371.

It is an arithmetic number, because the mean of its divisors is an integer number (525078675).

Almost surely, 2^2100201253 is an apocalyptic number.

It is an amenable number.

2100201253 is a deficient number, since it is larger than the sum of its proper divisors (113447).

2100201253 is an equidigital number, since it uses as much as digits as its factorization.

2100201253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113446.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2100201253 is about 45827.9527472044. The cubic root of 2100201253 is about 1280.6200716806.

Adding to 2100201253 its reverse (3521020012), we get a palindrome (5621221265).

The spelling of 2100201253 in words is "two billion, one hundred million, two hundred one thousand, two hundred fifty-three".