12011110221222 has 96 divisors (see below), whose sum is σ = 31520778868800. Its totient is φ = 3226856361984.

The previous prime is 12011110221221. The next prime is 12011110221233. The reversal of 12011110221222 is 22212201111021.

12011110221222 is a `hidden beast` number, since 1 + 201 + 11 + 10 + 221 + 222 = 666.

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 = 12011110221195 and 12011110221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011110221221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 332947 + ... + 4912542.

It is an arithmetic number, because the mean of its divisors is an integer number (328341446550).

Almost surely, 2^{12011110221222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12011110221222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15760389434400).

12011110221222 is an abundant number, since it is smaller than the sum of its proper divisors (19509668647578).

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

12011110221222 is a wasteful number, since it uses less digits than its factorization.

12011110221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5246590 (or 5246587 counting only the distinct ones).

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

Adding to 12011110221222 its reverse (22212201111021), we get a palindrome (34223311332243).

The spelling of 12011110221222 in words is "twelve trillion, eleven billion, one hundred ten million, two hundred twenty-one thousand, two hundred twenty-two".