212300123 has 4 divisors (see below), whose sum is σ = 242628720. Its totient is φ = 181971528.

The previous prime is 212300119. The next prime is 212300141. The reversal of 212300123 is 321003212.

It is a happy number.

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 212300123 - 2² = 212300119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212300098 and 212300107.

It is not an unprimeable number, because it can be changed into a prime (212300723) 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, 15164288 + ... + 15164301.

It is an arithmetic number, because the mean of its divisors is an integer number (60657180).

Almost surely, 2^212300123 is an apocalyptic number.

212300123 is a deficient number, since it is larger than the sum of its proper divisors (30328597).

212300123 is an equidigital number, since it uses as much as digits as its factorization.

212300123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30328596.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 212300123 is about 14570.5223996945. The cubic root of 212300123 is about 596.5544393580.

Adding to 212300123 its reverse (321003212), we get a palindrome (533303335).

The spelling of 212300123 in words is "two hundred twelve million, three hundred thousand, one hundred twenty-three".