221033312213 has 8 divisors (see below), whose sum is σ = 252941449920. Its totient is φ = 189208162080.

The previous prime is 221033312189. The next prime is 221033312251. The reversal of 221033312213 is 312213330122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221033312213 - 2⁸ = 221033311957 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 (221033312263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20741183 + ... + 20751836.

It is an arithmetic number, because the mean of its divisors is an integer number (31617681240).

Almost surely, 2^221033312213 is an apocalyptic number.

It is an amenable number.

221033312213 is a deficient number, since it is larger than the sum of its proper divisors (31908137707).

221033312213 is an equidigital number, since it uses as much as digits as its factorization.

221033312213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41493787.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 221033312213 its reverse (312213330122), we get a palindrome (533246642335).

The spelling of 221033312213 in words is "two hundred twenty-one billion, thirty-three million, three hundred twelve thousand, two hundred thirteen".