212012210404 has 24 divisors (see below), whose sum is σ = 383849134200. Its totient is φ = 102341675520.

The previous prime is 212012210401. The next prime is 212012210479. The reversal of 212012210404 is 404012210212.

212012210404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9604000000 + 202408210404 = 98000^2 + 449898^2 .

It is not an unprimeable number, because it can be changed into a prime (212012210401) 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 7 ways as a sum of consecutive naturals, for example, 1345302 + ... + 1494610.

It is an arithmetic number, because the mean of its divisors is an integer number (15993713925).

Almost surely, 2^212012210404 is an apocalyptic number.

It is an amenable number.

212012210404 is a deficient number, since it is larger than the sum of its proper divisors (171836923796).

212012210404 is a wasteful number, since it uses less digits than its factorization.

212012210404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161583 (or 161581 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212012210404 its reverse (404012210212), we get a palindrome (616024420616).

The spelling of 212012210404 in words is "two hundred twelve billion, twelve million, two hundred ten thousand, four hundred four".