221100002101 has 16 divisors (see below), whose sum is σ = 244272345408. Its totient is φ = 198443017600.

The previous prime is 221100002099. The next prime is 221100002107. The reversal of 221100002101 is 101200001122.

It is a cyclic number.

It is not a de Polignac number, because 221100002101 - 2¹ = 221100002099 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 (221100002107) 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, 1270395 + ... + 1433911.

It is an arithmetic number, because the mean of its divisors is an integer number (15267021588).

Almost surely, 2^221100002101 is an apocalyptic number.

It is an amenable number.

221100002101 is a deficient number, since it is larger than the sum of its proper divisors (23172343307).

221100002101 is a wasteful number, since it uses less digits than its factorization.

221100002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165092.

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

Adding to 221100002101 its reverse (101200001122), we get a palindrome (322300003223).

The spelling of 221100002101 in words is "two hundred twenty-one billion, one hundred million, two thousand, one hundred one".