12011222211200 has 48 divisors (see below), whose sum is σ = 29671472376510. Its totient is φ = 4804488883200.

The previous prime is 12011222211199. The next prime is 12011222211239. The reversal of 12011222211200 is 211222211021.

It can be written as a sum of positive squares in 3 ways, for example, as 11582804835904 + 428417375296 = 3403352^2 + 654536^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1876750271 + ... + 1876756670.

Almost surely, 2^{12011222211200} is an apocalyptic number.

12011222211200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011222211200 is an abundant number, since it is smaller than the sum of its proper divisors (17660250165310).

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

12011222211200 is an equidigital number, since it uses as much as digits as its factorization.

12011222211200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3753506965 (or 3753506948 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12011222211200 its reverse (211222211021), we get a palindrome (12222444422221).

The spelling of 12011222211200 in words is "twelve trillion, eleven billion, two hundred twenty-two million, two hundred eleven thousand, two hundred".