221110111101 has 16 divisors (see below), whose sum is σ = 329094120960. Its totient is φ = 130889705520.

The previous prime is 221110111097. The next prime is 221110111127. The reversal of 221110111101 is 101111011122.

It is not a de Polignac number, because 221110111101 - 2² = 221110111097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221110113101) 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, 77909121 + ... + 77911958.

It is an arithmetic number, because the mean of its divisors is an integer number (20568382560).

Almost surely, 2^221110111101 is an apocalyptic number.

It is an amenable number.

221110111101 is a deficient number, since it is larger than the sum of its proper divisors (107984009859).

221110111101 is a wasteful number, since it uses less digits than its factorization.

221110111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155821136.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 221110111101 its reverse (101111011122), we get a palindrome (322221122223).

The spelling of 221110111101 in words is "two hundred twenty-one billion, one hundred ten million, one hundred eleven thousand, one hundred one".