212202013123 has 4 divisors (see below), whose sum is σ = 212218454160. Its totient is φ = 212185572088.

The previous prime is 212202013081. The next prime is 212202013141. The reversal of 212202013123 is 321310202212.

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 212202013123 - 2²⁹ = 211665142211 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 212202013123.

It is not an unprimeable number, because it can be changed into a prime (212202013183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8201143 + ... + 8226976.

It is an arithmetic number, because the mean of its divisors is an integer number (53054613540).

Almost surely, 2^212202013123 is an apocalyptic number.

212202013123 is a deficient number, since it is larger than the sum of its proper divisors (16441037).

212202013123 is a wasteful number, since it uses less digits than its factorization.

212202013123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16441036.

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

Adding to 212202013123 its reverse (321310202212), we get a palindrome (533512215335).

The spelling of 212202013123 in words is "two hundred twelve billion, two hundred two million, thirteen thousand, one hundred twenty-three".