212331321012212 has 24 divisors (see below), whose sum is σ = 376672480048200. Its totient is φ = 104710631993856.

The previous prime is 212331321012203. The next prime is 212331321012241. The reversal of 212331321012212 is 212210123133212.

It can be written as a sum of positive squares in 4 ways, for example, as 58724695545616 + 153606625466596 = 7663204^2 + 12393814^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42443864 + ... + 47182032.

It is an arithmetic number, because the mean of its divisors is an integer number (15694686668675).

Almost surely, 2^{212331321012212} is an apocalyptic number.

It is an amenable number.

212331321012212 is a deficient number, since it is larger than the sum of its proper divisors (164341159035988).

212331321012212 is a wasteful number, since it uses less digits than its factorization.

212331321012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891715 (or 4891713 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 212331321012212 its reverse (212210123133212), we get a palindrome (424541444145424).

The spelling of 212331321012212 in words is "two hundred twelve trillion, three hundred thirty-one billion, three hundred twenty-one million, twelve thousand, two hundred twelve".