221133232213 has 4 divisors (see below), whose sum is σ = 234141069420. Its totient is φ = 208125395008.

The previous prime is 221133232193. The next prime is 221133232217. The reversal of 221133232213 is 312232331122.

221133232213 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.

It can be written as a sum of positive squares in 2 ways, for example, as 146017222884 + 75116009329 = 382122^2 + 274073^2 .

It is a cyclic number.

It is not a de Polignac number, because 221133232213 - 2²⁵ = 221099677781 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 (221133232217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6503918578 + ... + 6503918611.

It is an arithmetic number, because the mean of its divisors is an integer number (58535267355).

Almost surely, 2^221133232213 is an apocalyptic number.

It is an amenable number.

221133232213 is a deficient number, since it is larger than the sum of its proper divisors (13007837207).

221133232213 is a wasteful number, since it uses less digits than its factorization.

221133232213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13007837206.

The product of its digits is 2592, while the sum is 25.

Adding to 221133232213 its reverse (312232331122), we get a palindrome (533365563335).

The spelling of 221133232213 in words is "two hundred twenty-one billion, one hundred thirty-three million, two hundred thirty-two thousand, two hundred thirteen".