212111212112 has 80 divisors (see below), whose sum is σ = 427837200000. Its totient is φ = 101749519872.

The previous prime is 212111212069. The next prime is 212111212121. The reversal of 212111212112 is 211212111212.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 136933514 + ... + 136935062.

It is an arithmetic number, because the mean of its divisors is an integer number (5347965000).

Almost surely, 2^212111212112 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 212111212112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213918600000).

212111212112 is an abundant number, since it is smaller than the sum of its proper divisors (215725987888).

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

212111212112 is a wasteful number, since it uses less digits than its factorization.

212111212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3268 (or 3262 counting only the distinct ones).

The product of its digits is 32, while the sum is 17.

Adding to 212111212112 its reverse (211212111212), we get a palindrome (423323323324).

The spelling of 212111212112 in words is "two hundred twelve billion, one hundred eleven million, two hundred twelve thousand, one hundred twelve".