211212101112 has 32 divisors (see below), whose sum is σ = 528649331280. Its totient is φ = 70321489920.

The previous prime is 211212101041. The next prime is 211212101173. The reversal of 211212101112 is 211101212112.

It is a happy number.

It is a super-2 number, since 2×211212101112² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211212101091 and 211212101100.

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, 5138089 + ... + 5179032.

Almost surely, 2^211212101112 is an apocalyptic number.

It is an amenable number.

211212101112 is an abundant number, since it is smaller than the sum of its proper divisors (317437230168).

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

211212101112 is a wasteful number, since it uses less digits than its factorization.

211212101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10317983 (or 10317979 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211212101112 its reverse (211101212112), we get a palindrome (422313313224).

The spelling of 211212101112 in words is "two hundred eleven billion, two hundred twelve million, one hundred one thousand, one hundred twelve".