12221120112112 has 20 divisors (see below), whose sum is σ = 23681960328960. Its totient is φ = 6109646478848.

The previous prime is 12221120112107. The next prime is 12221120112161. The reversal of 12221120112112 is 21121102112221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12221120112112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56988208 + ... + 57202255.

It is an arithmetic number, because the mean of its divisors is an integer number (1184098016448).

Almost surely, 2^{12221120112112} is an apocalyptic number.

It is an amenable number.

12221120112112 is a deficient number, since it is larger than the sum of its proper divisors (11460840216848).

12221120112112 is a wasteful number, since it uses less digits than its factorization.

12221120112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114197160 (or 114197154 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12221120112112 its reverse (21121102112221), we get a palindrome (33342222224333).

The spelling of 12221120112112 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty million, one hundred twelve thousand, one hundred twelve".