12221012002120 has 64 divisors (see below), whose sum is σ = 28083253236480. Its totient is φ = 4784238122496.

The previous prime is 12221012002117. The next prime is 12221012002151. The reversal of 12221012002120 is 2120021012221.

It is a happy number.

It is a super-2 number, since 2×12221012002120² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12221012002094 and 12221012002103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68450007 + ... + 68628313.

It is an arithmetic number, because the mean of its divisors is an integer number (438800831820).

Almost surely, 2^{12221012002120} is an apocalyptic number.

12221012002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221012002120 is an abundant number, since it is smaller than the sum of its proper divisors (15862241234360).

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

12221012002120 is a wasteful number, since it uses less digits than its factorization.

12221012002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214822 (or 214818 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12221012002120 its reverse (2120021012221), we get a palindrome (14341033014341).

The spelling of 12221012002120 in words is "twelve trillion, two hundred twenty-one billion, twelve million, two thousand, one hundred twenty".