212440443204 has 48 divisors (see below), whose sum is σ = 540803592000. Its totient is φ = 64370403840.

The previous prime is 212440443179. The next prime is 212440443209. The reversal of 212440443204 is 402344044212.

It is not an unprimeable number, because it can be changed into a prime (212440443209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1647672 + ... + 1771920.

It is an arithmetic number, because the mean of its divisors is an integer number (11266741500).

Almost surely, 2^212440443204 is an apocalyptic number.

It is an amenable number.

212440443204 is an abundant number, since it is smaller than the sum of its proper divisors (328363148796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212440443204 is a wasteful number, since it uses less digits than its factorization.

212440443204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137220 (or 137218 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 212440443204 its reverse (402344044212), we get a palindrome (614784487416).

The spelling of 212440443204 in words is "two hundred twelve billion, four hundred forty million, four hundred forty-three thousand, two hundred four".