2101320111023 has 16 divisors (see below), whose sum is σ = 2527951249920. Its totient is φ = 1706303162016.

The previous prime is 2101320111019. The next prime is 2101320111043. The reversal of 2101320111023 is 3201110231012.

It is a cyclic number.

It is not a de Polignac number, because 2101320111023 - 2² = 2101320111019 is a prime.

It is a super-2 number, since 2×2101320111023² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101320110992 and 2101320111010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101320111043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9180590 + ... + 9406692.

It is an arithmetic number, because the mean of its divisors is an integer number (157996953120).

Almost surely, 2^{2101320111023} is an apocalyptic number.

2101320111023 is a deficient number, since it is larger than the sum of its proper divisors (426631138897).

2101320111023 is a wasteful number, since it uses less digits than its factorization.

2101320111023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296006.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2101320111023 its reverse (3201110231012), we get a palindrome (5302430342035).

The spelling of 2101320111023 in words is "two trillion, one hundred one billion, three hundred twenty million, one hundred eleven thousand, twenty-three".