2102130021323 has 4 divisors (see below), whose sum is σ = 2141792851968. Its totient is φ = 2062467190680.

The previous prime is 2102130021317. The next prime is 2102130021367. The reversal of 2102130021323 is 3231200312012.

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

It is a cyclic number.

It is not a de Polignac number, because 2102130021323 - 2⁴ = 2102130021307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102130021295 and 2102130021304.

It is not an unprimeable number, because it can be changed into a prime (2102130021623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19831415243 + ... + 19831415348.

It is an arithmetic number, because the mean of its divisors is an integer number (535448212992).

Almost surely, 2^{2102130021323} is an apocalyptic number.

2102130021323 is a deficient number, since it is larger than the sum of its proper divisors (39662830645).

2102130021323 is an equidigital number, since it uses as much as digits as its factorization.

2102130021323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39662830644.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2102130021323 its reverse (3231200312012), we get a palindrome (5333330333335).

The spelling of 2102130021323 in words is "two trillion, one hundred two billion, one hundred thirty million, twenty-one thousand, three hundred twenty-three".