212104303405 has 32 divisors (see below), whose sum is σ = 272578037760. Its totient is φ = 158091447360.

The previous prime is 212104303399. The next prime is 212104303409. The reversal of 212104303405 is 504303401212.

212104303405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212104303405 - 2²⁹ = 211567432493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212104303405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212104303409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 521206 + ... + 834184.

It is an arithmetic number, because the mean of its divisors is an integer number (8518063680).

Almost surely, 2^212104303405 is an apocalyptic number.

It is an amenable number.

212104303405 is a deficient number, since it is larger than the sum of its proper divisors (60473734355).

212104303405 is a wasteful number, since it uses less digits than its factorization.

212104303405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313161.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 212104303405 its reverse (504303401212), we get a palindrome (716407704617).

The spelling of 212104303405 in words is "two hundred twelve billion, one hundred four million, three hundred three thousand, four hundred five".