2126100013 has 4 divisors (see below), whose sum is σ = 2218539168. Its totient is φ = 2033660860.

The previous prime is 2126100007. The next prime is 2126100023. The reversal of 2126100013 is 3100016212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2126100013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2126100013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126100023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46219543 + ... + 46219588.

It is an arithmetic number, because the mean of its divisors is an integer number (554634792).

Almost surely, 2^2126100013 is an apocalyptic number.

2126100013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2126100013 is a deficient number, since it is larger than the sum of its proper divisors (92439155).

2126100013 is an equidigital number, since it uses as much as digits as its factorization.

2126100013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92439154.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2126100013 is about 46109.6520589778. The cubic root of 2126100013 is about 1285.8625957421.

Adding to 2126100013 its reverse (3100016212), we get a palindrome (5226116225).

The spelling of 2126100013 in words is "two billion, one hundred twenty-six million, one hundred thousand, thirteen".