12000111221211 has 32 divisors (see below), whose sum is σ = 16506266407488. Its totient is φ = 7748966891520.

The previous prime is 12000111221201. The next prime is 12000111221233. The reversal of 12000111221211 is 11212211100021.

It is a happy number.

It is not a de Polignac number, because 12000111221211 - 2¹³ = 12000111213019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12000111221201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144299835 + ... + 144382971.

It is an arithmetic number, because the mean of its divisors is an integer number (515820825234).

Almost surely, 2^{12000111221211} is an apocalyptic number.

12000111221211 is a deficient number, since it is larger than the sum of its proper divisors (4506155186277).

12000111221211 is a wasteful number, since it uses less digits than its factorization.

12000111221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88991.

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

Adding to 12000111221211 its reverse (11212211100021), we get a palindrome (23212322321232).

The spelling of 12000111221211 in words is "twelve trillion, one hundred eleven million, two hundred twenty-one thousand, two hundred eleven".