221110200021 has 8 divisors (see below), whose sum is σ = 294880002304. Its totient is φ = 147373598880.

The previous prime is 221110199971. The next prime is 221110200023. The reversal of 221110200021 is 120002011122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221110200021 - 2¹⁰ = 221110198997 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 (221110200023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8284741 + ... + 8311386.

It is an arithmetic number, because the mean of its divisors is an integer number (36860000288).

Almost surely, 2^221110200021 is an apocalyptic number.

It is an amenable number.

221110200021 is a deficient number, since it is larger than the sum of its proper divisors (73769802283).

221110200021 is a wasteful number, since it uses less digits than its factorization.

221110200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16600571.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221110200021 its reverse (120002011122), we get a palindrome (341112211143).

The spelling of 221110200021 in words is "two hundred twenty-one billion, one hundred ten million, two hundred thousand, twenty-one".