12102112011222 has 80 divisors (see below), whose sum is σ = 27201839897232. Its totient is φ = 4021523251200.

The previous prime is 12102112011181. The next prime is 12102112011239. The reversal of 12102112011222 is 22211021120121.

12102112011222 is a `hidden beast` number, since 1 + 210 + 211 + 20 + 1 + 1 + 222 = 666.

12102112011222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12102112011222² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12102112011195 and 12102112011204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 726801597 + ... + 726818247.

Almost surely, 2^{12102112011222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12102112011222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13600919948616).

12102112011222 is an abundant number, since it is smaller than the sum of its proper divisors (15099727886010).

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

12102112011222 is a wasteful number, since it uses less digits than its factorization.

12102112011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30315 (or 30306 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12102112011222 its reverse (22211021120121), we get a palindrome (34313133131343).

The spelling of 12102112011222 in words is "twelve trillion, one hundred two billion, one hundred twelve million, eleven thousand, two hundred twenty-two".