12011111100221 has 8 divisors (see below), whose sum is σ = 12014099690880. Its totient is φ = 12008122877088.

The previous prime is 12011111100151. The next prime is 12011111100229. The reversal of 12011111100221 is 12200111111021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12011111100221 - 2²⁶ = 12011043991357 is a prime.

It is a super-2 number, since 2×12011111100221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011111100196 and 12011111100205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011111100229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72177650 + ... + 72343868.

It is an arithmetic number, because the mean of its divisors is an integer number (1501762461360).

Almost surely, 2^{12011111100221} is an apocalyptic number.

It is an amenable number.

12011111100221 is a deficient number, since it is larger than the sum of its proper divisors (2988590659).

12011111100221 is a wasteful number, since it uses less digits than its factorization.

12011111100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183763.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12011111100221 its reverse (12200111111021), we get a palindrome (24211222211242).

The spelling of 12011111100221 in words is "twelve trillion, eleven billion, one hundred eleven million, one hundred thousand, two hundred twenty-one".