12221110121112 has 48 divisors (see below), whose sum is σ = 33100077376080. Its totient is φ = 4073551070400.

The previous prime is 12221110121093. The next prime is 12221110121137. The reversal of 12221110121112 is 21112101112221.

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 an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1225564 + ... + 5093547.

It is an arithmetic number, because the mean of its divisors is an integer number (689584945335).

Almost surely, 2^{12221110121112} is an apocalyptic number.

12221110121112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12221110121112 is an abundant number, since it is smaller than the sum of its proper divisors (20878967254968).

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

12221110121112 is a wasteful number, since it uses less digits than its factorization.

12221110121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6345984 (or 6345977 counting only the distinct ones).

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

Adding to 12221110121112 its reverse (21112101112221), we get a palindrome (33333211233333).

The spelling of 12221110121112 in words is "twelve trillion, two hundred twenty-one billion, one hundred ten million, one hundred twenty-one thousand, one hundred twelve".