12011311303221 has 32 divisors (see below), whose sum is σ = 16844133777408. Its totient is φ = 7598617361280.

The previous prime is 12011311303217. The next prime is 12011311303237. The reversal of 12011311303221 is 12230311311021.

It is not a de Polignac number, because 12011311303221 - 2² = 12011311303217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011311303021) 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 31 ways as a sum of consecutive naturals, for example, 14407416 + ... + 15218286.

It is an arithmetic number, because the mean of its divisors is an integer number (526379180544).

Almost surely, 2^{12011311303221} is an apocalyptic number.

It is an amenable number.

12011311303221 is a deficient number, since it is larger than the sum of its proper divisors (4832822474187).

12011311303221 is a wasteful number, since it uses less digits than its factorization.

12011311303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812601.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 12011311303221 its reverse (12230311311021), we get a palindrome (24241622614242).

The spelling of 12011311303221 in words is "twelve trillion, eleven billion, three hundred eleven million, three hundred three thousand, two hundred twenty-one".