221200010101 has 16 divisors (see below), whose sum is σ = 254970327040. Its totient is φ = 187974380160.

The previous prime is 221200010099. The next prime is 221200010113. The reversal of 221200010101 is 101010002122.

It is not a de Polignac number, because 221200010101 - 2¹ = 221200010099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221200010201) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 1183321 + ... + 1357441.

It is an arithmetic number, because the mean of its divisors is an integer number (15935645440).

Almost surely, 2^221200010101 is an apocalyptic number.

It is an amenable number.

221200010101 is a deficient number, since it is larger than the sum of its proper divisors (33770316939).

221200010101 is a wasteful number, since it uses less digits than its factorization.

221200010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175684.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 221200010101 its reverse (101010002122), we get a palindrome (322210012223).

The spelling of 221200010101 in words is "two hundred twenty-one billion, two hundred million, ten thousand, one hundred one".