201100022221 has 16 divisors (see below), whose sum is σ = 247557316608. Its totient is φ = 159558418800.

The previous prime is 201100022213. The next prime is 201100022239. The reversal of 201100022221 is 122220001102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 201100022221 - 2³ = 201100022213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201100022261) 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 15 ways as a sum of consecutive naturals, for example, 20141275 + ... + 20151256.

It is an arithmetic number, because the mean of its divisors is an integer number (15472332288).

Almost surely, 2^201100022221 is an apocalyptic number.

It is an amenable number.

201100022221 is a deficient number, since it is larger than the sum of its proper divisors (46457294387).

201100022221 is a wasteful number, since it uses less digits than its factorization.

201100022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40292592.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201100022221 its reverse (122220001102), we get a palindrome (323320023323).

The spelling of 201100022221 in words is "two hundred one billion, one hundred million, twenty-two thousand, two hundred twenty-one".