12220112120121 has 48 divisors (see below), whose sum is σ = 18714421440000. Its totient is φ = 7657336157184.

The previous prime is 12220112120059. The next prime is 12220112120171. The reversal of 12220112120121 is 12102121102221.

12220112120121 is a `hidden beast` number, since 122 + 201 + 121 + 201 + 21 = 666.

It is not a de Polignac number, because 12220112120121 - 2¹¹ = 12220112118073 is a prime.

It is a super-2 number, since 2×12220112120121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12220112120094 and 12220112120103.

It is not an unprimeable number, because it can be changed into a prime (12220112120171) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 603482005 + ... + 603502253.

It is an arithmetic number, because the mean of its divisors is an integer number (389883780000).

Almost surely, 2^{12220112120121} is an apocalyptic number.

It is an amenable number.

12220112120121 is a deficient number, since it is larger than the sum of its proper divisors (6494309319879).

12220112120121 is a wasteful number, since it uses less digits than its factorization.

12220112120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25318 (or 25315 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12220112120121 its reverse (12102121102221), we get a palindrome (24322233222342).

The spelling of 12220112120121 in words is "twelve trillion, two hundred twenty billion, one hundred twelve million, one hundred twenty thousand, one hundred twenty-one".