12011222111200 has 576 divisors, whose sum is σ = 34728299121600. Its totient is φ = 4016259072000.

The previous prime is 12011222111191. The next prime is 12011222111249. The reversal of 12011222111200 is 211122211021.

It is a Harshad number since it is a multiple of its sum of digits (16).

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 95 ways as a sum of consecutive naturals, for example, 578760024 + ... + 578780776.

It is an arithmetic number, because the mean of its divisors is an integer number (60292185975).

Almost surely, 2^{12011222111200} is an apocalyptic number.

12011222111200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12011222111200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17364149560800).

12011222111200 is an abundant number, since it is smaller than the sum of its proper divisors (22717077010400).

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

12011222111200 is a wasteful number, since it uses less digits than its factorization.

12011222111200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20935 (or 20922 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12011222111200 its reverse (211122211021), we get a palindrome (12222344322221).

The spelling of 12011222111200 in words is "twelve trillion, eleven billion, two hundred twenty-two million, one hundred eleven thousand, two hundred".