212420440323 has 72 divisors (see below), whose sum is σ = 406990610208. Its totient is φ = 105454960128.

The previous prime is 212420440313. The next prime is 212420440367. The reversal of 212420440323 is 323044024212.

212420440323 is a `hidden beast` number, since 212 + 4 + 2 + 0 + 440 + 3 + 2 + 3 = 666.

212420440323 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 212420440323 - 2⁹ = 212420439811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212420440313) 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 71 ways as a sum of consecutive naturals, for example, 992311 + ... + 1187232.

It is an arithmetic number, because the mean of its divisors is an integer number (5652647364).

Almost surely, 2^212420440323 is an apocalyptic number.

212420440323 is a deficient number, since it is larger than the sum of its proper divisors (194570169885).

212420440323 is a wasteful number, since it uses less digits than its factorization.

212420440323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179593 (or 2179583 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 212420440323 its reverse (323044024212), we get a palindrome (535464464535).

The spelling of 212420440323 in words is "two hundred twelve billion, four hundred twenty million, four hundred forty thousand, three hundred twenty-three".