12221210020120 has 64 divisors (see below), whose sum is σ = 27556186521600. Its totient is φ = 4878098129280.

The previous prime is 12221210020111. The next prime is 12221210020127. The reversal of 12221210020120 is 2102001212221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12221210020094 and 12221210020103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221210020127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51135861 + ... + 51374299.

It is an arithmetic number, because the mean of its divisors is an integer number (430565414400).

Almost surely, 2^{12221210020120} is an apocalyptic number.

12221210020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221210020120 is an abundant number, since it is smaller than the sum of its proper divisors (15334976501480).

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

12221210020120 is a wasteful number, since it uses less digits than its factorization.

12221210020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241168 (or 241164 counting only the distinct ones).

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

Adding to 12221210020120 its reverse (2102001212221), we get a palindrome (14323211232341).

The spelling of 12221210020120 in words is "twelve trillion, two hundred twenty-one billion, two hundred ten million, twenty thousand, one hundred twenty".