212104403 has 4 divisors (see below), whose sum is σ = 242405040. Its totient is φ = 181803768.

The previous prime is 212104397. The next prime is 212104447. The reversal of 212104403 is 304401212.

212104403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212104403 - 2⁸ = 212104147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212104303) 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, 15150308 + ... + 15150321.

It is an arithmetic number, because the mean of its divisors is an integer number (60601260).

Almost surely, 2^212104403 is an apocalyptic number.

212104403 is a deficient number, since it is larger than the sum of its proper divisors (30300637).

212104403 is an equidigital number, since it uses as much as digits as its factorization.

212104403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30300636.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 212104403 is about 14563.8045510093. The cubic root of 212104403 is about 596.3710613312.

Adding to 212104403 its reverse (304401212), we get a palindrome (516505615).

The spelling of 212104403 in words is "two hundred twelve million, one hundred four thousand, four hundred three".