12212101211112 has 64 divisors (see below), whose sum is σ = 37006367313600. Its totient is φ = 3700636729920.

The previous prime is 12212101211069. The next prime is 12212101211113. The reversal of 12212101211112 is 21111210121221.

It is a happy number.

12212101211112 is a `hidden beast` number, since 1 + 221 + 210 + 121 + 1 + 112 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (12212101211113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2569884243 + ... + 2569888994.

It is an arithmetic number, because the mean of its divisors is an integer number (578224489275).

Almost surely, 2^{12212101211112} is an apocalyptic number.

12212101211112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12212101211112 is an abundant number, since it is smaller than the sum of its proper divisors (24794266102488).

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

12212101211112 is a wasteful number, since it uses less digits than its factorization.

12212101211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5139773263 (or 5139773253 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12212101211112 its reverse (21111210121221), we get a palindrome (33323311332333).

The spelling of 12212101211112 in words is "twelve trillion, two hundred twelve billion, one hundred one million, two hundred eleven thousand, one hundred twelve".