212023102123 has 4 divisors (see below), whose sum is σ = 242312116720. Its totient is φ = 181734087528.

The previous prime is 212023102087. The next prime is 212023102177. The reversal of 212023102123 is 321201320212.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-212023102123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212023102123.

It is not an unprimeable number, because it can be changed into a prime (212023102523) 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, 15144507288 + ... + 15144507301.

It is an arithmetic number, because the mean of its divisors is an integer number (60578029180).

Almost surely, 2^212023102123 is an apocalyptic number.

212023102123 is a deficient number, since it is larger than the sum of its proper divisors (30289014597).

212023102123 is an equidigital number, since it uses as much as digits as its factorization.

212023102123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30289014596.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212023102123 its reverse (321201320212), we get a palindrome (533224422335).

The spelling of 212023102123 in words is "two hundred twelve billion, twenty-three million, one hundred two thousand, one hundred twenty-three".