12011201032111 has 4 divisors (see below), whose sum is σ = 12717742269312. Its totient is φ = 11304659794912.

The previous prime is 12011201032093. The next prime is 12011201032147. The reversal of 12011201032111 is 11123010211021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12011201032111 - 2¹⁷ = 12011200901039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011201032211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353270618575 + ... + 353270618608.

It is an arithmetic number, because the mean of its divisors is an integer number (3179435567328).

Almost surely, 2^{12011201032111} is an apocalyptic number.

12011201032111 is a deficient number, since it is larger than the sum of its proper divisors (706541237201).

12011201032111 is an equidigital number, since it uses as much as digits as its factorization.

12011201032111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706541237200.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 12011201032111 its reverse (11123010211021), we get a palindrome (23134211243132).

The spelling of 12011201032111 in words is "twelve trillion, eleven billion, two hundred one million, thirty-two thousand, one hundred eleven".