221100112101 has 32 divisors (see below), whose sum is σ = 329501934720. Its totient is φ = 130708812800.

The previous prime is 221100112097. The next prime is 221100112141. The reversal of 221100112101 is 101211001122.

It is a cyclic number.

It is not a de Polignac number, because 221100112101 - 2² = 221100112097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100112141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10582201 + ... + 10603073.

It is an arithmetic number, because the mean of its divisors is an integer number (10296935460).

Almost surely, 2^221100112101 is an apocalyptic number.

It is an amenable number.

221100112101 is a deficient number, since it is larger than the sum of its proper divisors (108401822619).

221100112101 is a wasteful number, since it uses less digits than its factorization.

221100112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28757.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 221100112101 its reverse (101211001122), we get a palindrome (322311113223).

The spelling of 221100112101 in words is "two hundred twenty-one billion, one hundred million, one hundred twelve thousand, one hundred one".