221113311164 has 48 divisors (see below), whose sum is σ = 395218501440. Its totient is φ = 108218073600.

The previous prime is 221113311163. The next prime is 221113311187. The reversal of 221113311164 is 461113311122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221113311163) 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, 71118842 + ... + 71121950.

It is an arithmetic number, because the mean of its divisors is an integer number (8233718780).

Almost surely, 2^221113311164 is an apocalyptic number.

It is an amenable number.

221113311164 is a deficient number, since it is larger than the sum of its proper divisors (174105190276).

221113311164 is a wasteful number, since it uses less digits than its factorization.

221113311164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4950 (or 4948 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

Adding to 221113311164 its reverse (461113311122), we get a palindrome (682226622286).

The spelling of 221113311164 in words is "two hundred twenty-one billion, one hundred thirteen million, three hundred eleven thousand, one hundred sixty-four".