212023113123 has 12 divisors (see below), whose sum is σ = 298359396168. Its totient is φ = 133909333920.

The previous prime is 212023113119. The next prime is 212023113217. The reversal of 212023113123 is 321311320212.

It is not a de Polignac number, because 212023113123 - 2² = 212023113119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212023113123.

It is not an unprimeable number, because it can be changed into a prime (212023113103) 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 11 ways as a sum of consecutive naturals, for example, 97885858 + ... + 97888023.

It is an arithmetic number, because the mean of its divisors is an integer number (24863283014).

Almost surely, 2^212023113123 is an apocalyptic number.

212023113123 is a deficient number, since it is larger than the sum of its proper divisors (86336283045).

212023113123 is a wasteful number, since it uses less digits than its factorization.

212023113123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195773922 (or 195773903 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 212023113123 its reverse (321311320212), we get a palindrome (533334433335).

The spelling of 212023113123 in words is "two hundred twelve billion, twenty-three million, one hundred thirteen thousand, one hundred twenty-three".