12221011121112 has 24 divisors (see below), whose sum is σ = 33098571786540. Its totient is φ = 4073670373680.

The previous prime is 12221011121101. The next prime is 12221011121161. The reversal of 12221011121112 is 21112111012221.

It is a happy number.

12221011121112 is a `hidden beast` number, since 122 + 210 + 111 + 211 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×12221011121112² (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 congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84868132714 + ... + 84868132857.

Almost surely, 2^{12221011121112} is an apocalyptic number.

12221011121112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12221011121112 is an abundant number, since it is smaller than the sum of its proper divisors (20877560665428).

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

12221011121112 is a wasteful number, since it uses less digits than its factorization.

12221011121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169736265583 (or 169736265576 counting only the distinct ones).

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

Adding to 12221011121112 its reverse (21112111012221), we get a palindrome (33333122133333).

The spelling of 12221011121112 in words is "twelve trillion, two hundred twenty-one billion, eleven million, one hundred twenty-one thousand, one hundred twelve".