12011102221111 has 16 divisors (see below), whose sum is σ = 14218978155840. Its totient is φ = 9927160346880.

The previous prime is 12011102221103. The next prime is 12011102221117. The reversal of 12011102221111 is 11112220111021.

It is not a de Polignac number, because 12011102221111 - 2³ = 12011102221103 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 (12011102221117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38720676 + ... + 39029641.

It is an arithmetic number, because the mean of its divisors is an integer number (888686134740).

Almost surely, 2^{12011102221111} is an apocalyptic number.

12011102221111 is a deficient number, since it is larger than the sum of its proper divisors (2207875934729).

12011102221111 is an equidigital number, since it uses as much as digits as its factorization.

12011102221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77751114.

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

Adding to 12011102221111 its reverse (11112220111021), we get a palindrome (23123322332132).

The spelling of 12011102221111 in words is "twelve trillion, eleven billion, one hundred two million, two hundred twenty-one thousand, one hundred eleven".