212112201331312 has 40 divisors (see below), whose sum is σ = 412119058317120. Its totient is φ = 105759186650880.

The previous prime is 212112201331309. The next prime is 212112201331313. The reversal of 212112201331312 is 213133102211212.

It is a super-4 number, since 4×212112201331312⁴ (a number of 58 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112201331313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2593114 + ... + 20759302.

It is an arithmetic number, because the mean of its divisors is an integer number (10302976457928).

Almost surely, 2^{212112201331312} is an apocalyptic number.

It is an amenable number.

212112201331312 is a deficient number, since it is larger than the sum of its proper divisors (200006856985808).

212112201331312 is a wasteful number, since it uses less digits than its factorization.

212112201331312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18168241 (or 18168235 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 212112201331312 its reverse (213133102211212), we get a palindrome (425245303542524).

The spelling of 212112201331312 in words is "two hundred twelve trillion, one hundred twelve billion, two hundred one million, three hundred thirty-one thousand, three hundred twelve".