212105116312 has 16 divisors (see below), whose sum is σ = 411410786400. Its totient is φ = 102395573280.

The previous prime is 212105116303. The next prime is 212105116343. The reversal of 212105116312 is 213611501212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457122864 + ... + 457123327.

It is an arithmetic number, because the mean of its divisors is an integer number (25713174150).

Almost surely, 2^212105116312 is an apocalyptic number.

It is an amenable number.

212105116312 is a deficient number, since it is larger than the sum of its proper divisors (199305670088).

212105116312 is a wasteful number, since it uses less digits than its factorization.

212105116312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914246226 (or 914246222 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 212105116312 its reverse (213611501212), we get a palindrome (425716617524).

The spelling of 212105116312 in words is "two hundred twelve billion, one hundred five million, one hundred sixteen thousand, three hundred twelve".