221102100220111 has 16 divisors (see below), whose sum is σ = 241605745373088. Its totient is φ = 200665975910400.

The previous prime is 221102100220073. The next prime is 221102100220139. The reversal of 221102100220111 is 111022001201122.

It is not a de Polignac number, because 221102100220111 - 2¹³ = 221102100211919 is a prime.

It is a super-2 number, since 2×221102100220111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102100290111) 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, 8921775 + ... + 22842991.

It is an arithmetic number, because the mean of its divisors is an integer number (15100359085818).

Almost surely, 2^{221102100220111} is an apocalyptic number.

221102100220111 is a deficient number, since it is larger than the sum of its proper divisors (20503645152977).

221102100220111 is a wasteful number, since it uses less digits than its factorization.

221102100220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13923642.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221102100220111 its reverse (111022001201122), we get a palindrome (332124101421233).

The spelling of 221102100220111 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred million, two hundred twenty thousand, one hundred eleven".