221102202164 has 24 divisors (see below), whose sum is σ = 412202827008. Its totient is φ = 103409758080.

The previous prime is 221102202163. The next prime is 221102202271. The reversal of 221102202164 is 461202201122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102202161) 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, 9962852 + ... + 9985019.

It is an arithmetic number, because the mean of its divisors is an integer number (17175117792).

Almost surely, 2^221102202164 is an apocalyptic number.

It is an amenable number.

221102202164 is a deficient number, since it is larger than the sum of its proper divisors (191100624844).

221102202164 is a wasteful number, since it uses less digits than its factorization.

221102202164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19948055 (or 19948053 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 221102202164 its reverse (461202201122), we get a palindrome (682304403286).

The spelling of 221102202164 in words is "two hundred twenty-one billion, one hundred two million, two hundred two thousand, one hundred sixty-four".