2100313201123 has 4 divisors (see below), whose sum is σ = 2100853270120. Its totient is φ = 2099773132128.

The previous prime is 2100313201097. The next prime is 2100313201139. The reversal of 2100313201123 is 3211023130012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100313201123 is a prime.

It is a super-2 number, since 2×2100313201123² (a number of 25 digits) contains 22 as substring.

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 2100313201123.

It is not an unprimeable number, because it can be changed into a prime (2100313201153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270028665 + ... + 270036442.

It is an arithmetic number, because the mean of its divisors is an integer number (525213317530).

Almost surely, 2^{2100313201123} is an apocalyptic number.

2100313201123 is a deficient number, since it is larger than the sum of its proper divisors (540068997).

2100313201123 is an equidigital number, since it uses as much as digits as its factorization.

2100313201123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540068996.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 2100313201123 its reverse (3211023130012), we get a palindrome (5311336331135).

The spelling of 2100313201123 in words is "two trillion, one hundred billion, three hundred thirteen million, two hundred one thousand, one hundred twenty-three".