12221133112221 has 16 divisors (see below), whose sum is σ = 17923104314688. Its totient is φ = 7406747338320.

The previous prime is 12221133112219. The next prime is 12221133112231.

12221133112221 is nontrivially palindromic in base 10.

12221133112221 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 12221133112221 - 2¹ = 12221133112219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12221133112191 and 12221133112200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221133112231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1530315706 + ... + 1530323691.

It is an arithmetic number, because the mean of its divisors is an integer number (1120194019668).

Almost surely, 2^{12221133112221} is an apocalyptic number.

12221133112221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12221133112221 is a deficient number, since it is larger than the sum of its proper divisors (5701971202467).

12221133112221 is an equidigital number, since it uses as much as digits as its factorization.

12221133112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3060639433 (or 3060639411 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

It can be divided in two parts, 1222113 and 3112221, that added together give a palindrome (4334334).

The spelling of 12221133112221 in words is "twelve trillion, two hundred twenty-one billion, one hundred thirty-three million, one hundred twelve thousand, two hundred twenty-one".