12211121121120 has 144 divisors (see below), whose sum is σ = 41703037608960. Its totient is φ = 3253752502272.

The previous prime is 12211121121119. The next prime is 12211121121179. The reversal of 12211121121120 is 2112112111221.

It is a happy number.

12211121121120 is a `hidden beast` number, since 1 + 221 + 1 + 1 + 211 + 211 + 20 = 666.

12211121121120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×12211121121120² (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 junction number, because it is equal to n+sod(n) for n = 12211121121093 and 12211121121102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1473309 + ... + 5156828.

It is an arithmetic number, because the mean of its divisors is an integer number (289604427840).

Almost surely, 2^{12211121121120} is an apocalyptic number.

12211121121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211121121120 is an abundant number, since it is smaller than the sum of its proper divisors (29491916487840).

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

12211121121120 is a wasteful number, since it uses less digits than its factorization.

12211121121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6631437 (or 6631426 counting only the distinct ones).

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

Adding to 12211121121120 its reverse (2112112111221), we get a palindrome (14323233232341).

The spelling of 12211121121120 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty".