221200102102 has 48 divisors (see below), whose sum is σ = 392874073200. Its totient is φ = 93109262400.

The previous prime is 221200102091. The next prime is 221200102133. The reversal of 221200102102 is 201201002122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4104024 + ... + 4157572.

It is an arithmetic number, because the mean of its divisors is an integer number (8184876525).

Almost surely, 2^221200102102 is an apocalyptic number.

221200102102 is a deficient number, since it is larger than the sum of its proper divisors (171673971098).

221200102102 is a wasteful number, since it uses less digits than its factorization.

221200102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54317 (or 54310 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221200102102 its reverse (201201002122), we get a palindrome (422401104224).

The spelling of 221200102102 in words is "two hundred twenty-one billion, two hundred million, one hundred two thousand, one hundred two".