12001113222021 has 72 divisors (see below), whose sum is σ = 21792503783232. Its totient is φ = 6234339260160.

The previous prime is 12001113221989. The next prime is 12001113222041. The reversal of 12001113222021 is 12022231110021.

12001113222021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12001113222021 - 2⁵ = 12001113221989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12001113221985 and 12001113222003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001113222041) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9554805 + ... + 10737621.

It is an arithmetic number, because the mean of its divisors is an integer number (302673663656).

Almost surely, 2^{12001113222021} is an apocalyptic number.

12001113222021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12001113222021 is a deficient number, since it is larger than the sum of its proper divisors (9791390561211).

12001113222021 is an frugal number, since it uses more digits than its factorization.

12001113222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182885 (or 1182838 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12001113222021 its reverse (12022231110021), we get a palindrome (24023344332042).

The spelling of 12001113222021 in words is "twelve trillion, one billion, one hundred thirteen million, two hundred twenty-two thousand, twenty-one".