12211122121112 has 16 divisors (see below), whose sum is σ = 22896129762000. Its totient is φ = 6105487517920.

The previous prime is 12211122121103. The next prime is 12211122121153. The reversal of 12211122121112 is 21112122111221.

It is a happy number.

12211122121112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12211122121112² (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 8483939 + ... + 9818322.

It is an arithmetic number, because the mean of its divisors is an integer number (1431008110125).

Almost surely, 2^{12211122121112} is an apocalyptic number.

It is an amenable number.

12211122121112 is a deficient number, since it is larger than the sum of its proper divisors (10685007640888).

12211122121112 is a wasteful number, since it uses less digits than its factorization.

12211122121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18385666 (or 18385662 counting only the distinct ones).

The product of its digits is 64, while the sum is 20.

Adding to 12211122121112 its reverse (21112122111221), we get a palindrome (33323244232333).

The spelling of 12211122121112 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred twelve".