212102212112 has 80 divisors (see below), whose sum is σ = 486661232640. Its totient is φ = 87662929536.

The previous prime is 212102212109. The next prime is 212102212139. The reversal of 212102212112 is 211212201212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101723 + ... + 659205.

It is an arithmetic number, because the mean of its divisors is an integer number (6083265408).

Almost surely, 2^212102212112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212102212112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243330616320).

212102212112 is an abundant number, since it is smaller than the sum of its proper divisors (274559020528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212102212112 is a wasteful number, since it uses less digits than its factorization.

212102212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557620 (or 557614 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212102212112 its reverse (211212201212), we get a palindrome (423314413324).

It can be divided in two parts, 21210 and 2212112, that added together give a palindrome (2233322).

The spelling of 212102212112 in words is "two hundred twelve billion, one hundred two million, two hundred twelve thousand, one hundred twelve".