12031113110221 has 4 divisors (see below), whose sum is σ = 12032298334944. Its totient is φ = 12029927885500.

The previous prime is 12031113110207. The next prime is 12031113110227. The reversal of 12031113110221 is 12201131113021.

12031113110221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12031113110221 - 2²¹ = 12031111013069 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 (12031113110227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592597135 + ... + 592617436.

It is an arithmetic number, because the mean of its divisors is an integer number (3008074583736).

Almost surely, 2^{12031113110221} is an apocalyptic number.

It is an amenable number.

12031113110221 is a deficient number, since it is larger than the sum of its proper divisors (1185224723).

12031113110221 is a wasteful number, since it uses less digits than its factorization.

12031113110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185224722.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 12031113110221 its reverse (12201131113021), we get a palindrome (24232244223242).

The spelling of 12031113110221 in words is "twelve trillion, thirty-one billion, one hundred thirteen million, one hundred ten thousand, two hundred twenty-one".