2102021110123 has 8 divisors (see below), whose sum is σ = 2294463643200. Its totient is φ = 1909803527880.

The previous prime is 2102021109989. The next prime is 2102021110141. The reversal of 2102021110123 is 3210111202012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2102021110123 - 2¹³ = 2102021101931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102021110097 and 2102021110106.

It is not an unprimeable number, because it can be changed into a prime (2102021150123) 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 7 ways as a sum of consecutive naturals, for example, 56218165 + ... + 56255542.

It is an arithmetic number, because the mean of its divisors is an integer number (286807955400).

Almost surely, 2^{2102021110123} is an apocalyptic number.

2102021110123 is a deficient number, since it is larger than the sum of its proper divisors (192442533077).

2102021110123 is a wasteful number, since it uses less digits than its factorization.

2102021110123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112475417.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 2102021110123 its reverse (3210111202012), we get a palindrome (5312132312135).

The spelling of 2102021110123 in words is "two trillion, one hundred two billion, twenty-one million, one hundred ten thousand, one hundred twenty-three".