12012122201220 has 96 divisors (see below), whose sum is σ = 37372437043200. Its totient is φ = 3203113427712.

The previous prime is 12012122201207. The next prime is 12012122201231. The reversal of 12012122201220 is 2210222121021.

It is a happy number.

12012122201220 is a `hidden beast` number, since 1 + 201 + 21 + 2 + 220 + 1 + 220 = 666.

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 = 12012122201193 and 12012122201202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14621341 + ... + 15421019.

It is an arithmetic number, because the mean of its divisors is an integer number (389296219200).

Almost surely, 2^{12012122201220} is an apocalyptic number.

12012122201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012122201220 is an abundant number, since it is smaller than the sum of its proper divisors (25360314841980).

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

12012122201220 is a wasteful number, since it uses less digits than its factorization.

12012122201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827514 (or 827506 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12012122201220 its reverse (2210222121021), we get a palindrome (14222344322241).

The spelling of 12012122201220 in words is "twelve trillion, twelve billion, one hundred twenty-two million, two hundred one thousand, two hundred twenty".