2021111130123 has 12 divisors (see below), whose sum is σ = 2925688111840. Its totient is φ = 1344497250096.

The previous prime is 2021111130113. The next prime is 2021111130173. The reversal of 2021111130123 is 3210311111202.

2021111130123 is a `hidden beast` number, since 20 + 211 + 111 + 301 + 23 = 666.

It is not a de Polignac number, because 2021111130123 - 2¹⁶ = 2021111064587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021111130096 and 2021111130105.

It is not an unprimeable number, because it can be changed into a prime (2021111130113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242509768 + ... + 242518101.

Almost surely, 2^{2021111130123} is an apocalyptic number.

2021111130123 is a deficient number, since it is larger than the sum of its proper divisors (904576981717).

2021111130123 is a wasteful number, since it uses less digits than its factorization.

2021111130123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485028338 (or 485028335 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 2021111130123 its reverse (3210311111202), we get a palindrome (5231422241325).

The spelling of 2021111130123 in words is "two trillion, twenty-one billion, one hundred eleven million, one hundred thirty thousand, one hundred twenty-three".