221200010102 has 4 divisors (see below), whose sum is σ = 331800015156. Its totient is φ = 110600005050.

The previous prime is 221200010099. The next prime is 221200010113. The reversal of 221200010102 is 201010002122.

It is a happy number.

221200010102 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55300002524 + ... + 55300002527.

It is an arithmetic number, because the mean of its divisors is an integer number (82950003789).

Almost surely, 2^221200010102 is an apocalyptic number.

221200010102 is a deficient number, since it is larger than the sum of its proper divisors (110600005054).

221200010102 is a wasteful number, since it uses less digits than its factorization.

221200010102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110600005053.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 221200010102 its reverse (201010002122), we get a palindrome (422210012224).

The spelling of 221200010102 in words is "two hundred twenty-one billion, two hundred million, ten thousand, one hundred two".