12011201111220 has 96 divisors (see below), whose sum is σ = 34769063675136. Its totient is φ = 3095781120000.

The previous prime is 12011201111219. The next prime is 12011201111237. The reversal of 12011201111220 is 2211110211021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12011201111220.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 17580181 + ... + 18250620.

It is an arithmetic number, because the mean of its divisors is an integer number (362177746616).

Almost surely, 2^{12011201111220} is an apocalyptic number.

12011201111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011201111220 is an abundant number, since it is smaller than the sum of its proper divisors (22757862563916).

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

12011201111220 is a wasteful number, since it uses less digits than its factorization.

12011201111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35831001 (or 35830999 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12011201111220 its reverse (2211110211021), we get a palindrome (14222311322241).

The spelling of 12011201111220 in words is "twelve trillion, eleven billion, two hundred one million, one hundred eleven thousand, two hundred twenty".