221101201110101 has 24 divisors (see below), whose sum is σ = 244565052076800. Its totient is φ = 199707059687616.

The previous prime is 221101201110091. The next prime is 221101201110131. The reversal of 221101201110101 is 101011102101122.

It is a de Polignac number, because none of the positive numbers 2^k-221101201110101 is a prime.

It is a super-2 number, since 2×221101201110101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221101201110131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33073136 + ... + 39192278.

It is an arithmetic number, because the mean of its divisors is an integer number (10190210503200).

Almost surely, 2^{221101201110101} is an apocalyptic number.

It is an amenable number.

221101201110101 is a deficient number, since it is larger than the sum of its proper divisors (23463850966699).

221101201110101 is a wasteful number, since it uses less digits than its factorization.

221101201110101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6123765 (or 6123752 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 221101201110101 its reverse (101011102101122), we get a palindrome (322112303211223).

The spelling of 221101201110101 in words is "two hundred twenty-one trillion, one hundred one billion, two hundred one million, one hundred ten thousand, one hundred one".