212023312330 has 16 divisors (see below), whose sum is σ = 381961884744. Its totient is φ = 84738231040.

The previous prime is 212023312321. The next prime is 212023312331. The reversal of 212023312330 is 33213320212.

It can be written as a sum of positive squares in 4 ways, for example, as 195472747129 + 16550565201 = 442123^2 + 128649^2 .

It is not an unprimeable number, because it can be changed into a prime (212023312331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8874211 + ... + 8898070.

Almost surely, 2^212023312330 is an apocalyptic number.

212023312330 is a deficient number, since it is larger than the sum of its proper divisors (169938572414).

212023312330 is a wasteful number, since it uses less digits than its factorization.

212023312330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17773481.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 212023312330 its reverse (33213320212), we get a palindrome (245236632542).

The spelling of 212023312330 in words is "two hundred twelve billion, twenty-three million, three hundred twelve thousand, three hundred thirty".