12211011221120 has 32 divisors (see below), whose sum is σ = 29191948702020. Its totient is φ = 4884404488192.

The previous prime is 12211011221111. The next prime is 12211011221177. The reversal of 12211011221120 is 2112211011221.

It can be written as a sum of positive squares in 2 ways, for example, as 12001679350336 + 209331870784 = 3464344^2 + 457528^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 9539851877 + ... + 9539853156.

Almost surely, 2^{12211011221120} is an apocalyptic number.

12211011221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211011221120 is an abundant number, since it is smaller than the sum of its proper divisors (16980937480900).

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

12211011221120 is an equidigital number, since it uses as much as digits as its factorization.

12211011221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19079705052 (or 19079705040 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12211011221120 its reverse (2112211011221), we get a palindrome (14323222232341).

The spelling of 12211011221120 in words is "twelve trillion, two hundred eleven billion, eleven million, two hundred twenty-one thousand, one hundred twenty".