221331302213 has 8 divisors (see below), whose sum is σ = 254464732032. Its totient is φ = 188576540496.

The previous prime is 221331302207. The next prime is 221331302251. The reversal of 221331302213 is 312203133122.

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

It is a cyclic number.

It is not a de Polignac number, because 221331302213 - 2²⁸ = 221062866757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221331302713) 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, 94665770 + ... + 94668107.

It is an arithmetic number, because the mean of its divisors is an integer number (31808091504).

Almost surely, 2^221331302213 is an apocalyptic number.

It is an amenable number.

221331302213 is a deficient number, since it is larger than the sum of its proper divisors (33133429819).

221331302213 is a wasteful number, since it uses less digits than its factorization.

221331302213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189334051.

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

Adding to 221331302213 its reverse (312203133122), we get a palindrome (533534435335).

The spelling of 221331302213 in words is "two hundred twenty-one billion, three hundred thirty-one million, three hundred two thousand, two hundred thirteen".