2102111031023 has 4 divisors (see below), whose sum is σ = 2102739844128. Its totient is φ = 2101482217920.

The previous prime is 2102111031019. The next prime is 2102111031049. The reversal of 2102111031023 is 3201301112012.

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 2102111031023 - 2² = 2102111031019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102111030992 and 2102111031010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102111030023) 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, 314401538 + ... + 314408223.

It is an arithmetic number, because the mean of its divisors is an integer number (525684961032).

Almost surely, 2^{2102111031023} is an apocalyptic number.

2102111031023 is a deficient number, since it is larger than the sum of its proper divisors (628813105).

2102111031023 is an equidigital number, since it uses as much as digits as its factorization.

2102111031023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628813104.

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

Adding to 2102111031023 its reverse (3201301112012), we get a palindrome (5303412143035).

The spelling of 2102111031023 in words is "two trillion, one hundred two billion, one hundred eleven million, thirty-one thousand, twenty-three".