2100221310323 has 4 divisors (see below), whose sum is σ = 2223763740360. Its totient is φ = 1976678880288.

The previous prime is 2100221310301. The next prime is 2100221310331. The reversal of 2100221310323 is 3230131220012.

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 2100221310323 - 2⁸ = 2100221310067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100221310295 and 2100221310304.

It is not an unprimeable number, because it can be changed into a prime (2100221310373) 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, 61771214993 + ... + 61771215026.

It is an arithmetic number, because the mean of its divisors is an integer number (555940935090).

Almost surely, 2^{2100221310323} is an apocalyptic number.

2100221310323 is a deficient number, since it is larger than the sum of its proper divisors (123542430037).

2100221310323 is a wasteful number, since it uses less digits than its factorization.

2100221310323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123542430036.

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

Adding to 2100221310323 its reverse (3230131220012), we get a palindrome (5330352530335).

The spelling of 2100221310323 in words is "two trillion, one hundred billion, two hundred twenty-one million, three hundred ten thousand, three hundred twenty-three".