221331102213 has 16 divisors (see below), whose sum is σ = 321379652160. Its totient is φ = 134673373824.

The previous prime is 221331102203. The next prime is 221331102221. The reversal of 221331102213 is 312201133122.

It is not a de Polignac number, because 221331102213 - 2⁹ = 221331101701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221331102213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221331102203) 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, 31879431 + ... + 31886372.

It is an arithmetic number, because the mean of its divisors is an integer number (20086228260).

Almost surely, 2^221331102213 is an apocalyptic number.

It is an amenable number.

221331102213 is a deficient number, since it is larger than the sum of its proper divisors (100048549947).

221331102213 is a wasteful number, since it uses less digits than its factorization.

221331102213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63765908.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 221331102213 its reverse (312201133122), we get a palindrome (533532235335).

The spelling of 221331102213 in words is "two hundred twenty-one billion, three hundred thirty-one million, one hundred two thousand, two hundred thirteen".