12011110221111 has 16 divisors (see below), whose sum is σ = 16389385985280. Its totient is φ = 7820169154560.

The previous prime is 12011110221107. The next prime is 12011110221133. The reversal of 12011110221111 is 11112201111021.

It is not a de Polignac number, because 12011110221111 - 2² = 12011110221107 is a prime.

It is a super-4 number, since 4×12011110221111⁴ (a number of 53 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011110221161) 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, 5070171 + ... + 7051868.

It is an arithmetic number, because the mean of its divisors is an integer number (1024336624080).

Almost surely, 2^{12011110221111} is an apocalyptic number.

12011110221111 is a deficient number, since it is larger than the sum of its proper divisors (4378275764169).

12011110221111 is a wasteful number, since it uses less digits than its factorization.

12011110221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12129766.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12011110221111 its reverse (11112201111021), we get a palindrome (23123311332132).

The spelling of 12011110221111 in words is "twelve trillion, eleven billion, one hundred ten million, two hundred twenty-one thousand, one hundred eleven".