12211011221112 has 128 divisors (see below), whose sum is σ = 37459892851200. Its totient is φ = 3700306372320.

The previous prime is 12211011221111. The next prime is 12211011221177. The reversal of 12211011221112 is 21112211011221.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211011221111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31531708 + ... + 31916619.

It is an arithmetic number, because the mean of its divisors is an integer number (292655412900).

Almost surely, 2^{12211011221112} is an apocalyptic number.

12211011221112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12211011221112 is an abundant number, since it is smaller than the sum of its proper divisors (25248881630088).

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

12211011221112 is an equidigital number, since it uses as much as digits as its factorization.

12211011221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63448365 (or 63448343 counting only the distinct ones).

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

Adding to 12211011221112 its reverse (21112211011221), we get a palindrome (33323222232333).

The spelling of 12211011221112 in words is "twelve trillion, two hundred eleven billion, eleven million, two hundred twenty-one thousand, one hundred twelve".