12011110221 has 8 divisors (see below), whose sum is σ = 17470705824. Its totient is φ = 7279460720.

The previous prime is 12011110211. The next prime is 12011110273. The reversal of 12011110221 is 12201111021.

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 12011110221 - 2¹⁵ = 12011077453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12011110197 and 12011110206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011110211) 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, 181986486 + ... + 181986551.

It is an arithmetic number, because the mean of its divisors is an integer number (2183838228).

Almost surely, 2^12011110221 is an apocalyptic number.

12011110221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12011110221 is a deficient number, since it is larger than the sum of its proper divisors (5459595603).

12011110221 is a wasteful number, since it uses less digits than its factorization.

12011110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363973051.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12011110221 its reverse (12201111021), we get a palindrome (24212221242).

The spelling of 12011110221 in words is "twelve billion, eleven million, one hundred ten thousand, two hundred twenty-one".