201022220101 has 4 divisors (see below), whose sum is σ = 201129205600. Its totient is φ = 200915234604.

The previous prime is 201022220099. The next prime is 201022220209. The reversal of 201022220101 is 101022220102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101022220102 = 2 ⋅50511110051.

It is a cyclic number.

It is not a de Polignac number, because 201022220101 - 2¹ = 201022220099 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 (201022220401) 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 3 ways as a sum of consecutive naturals, for example, 53489931 + ... + 53493688.

It is an arithmetic number, because the mean of its divisors is an integer number (50282301400).

Almost surely, 2^201022220101 is an apocalyptic number.

It is an amenable number.

201022220101 is a deficient number, since it is larger than the sum of its proper divisors (106985499).

201022220101 is a wasteful number, since it uses less digits than its factorization.

201022220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106985498.

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

Adding to 201022220101 its reverse (101022220102), we get a palindrome (302044440203).

Subtracting from 201022220101 its reverse (101022220102), we obtain a palindrome (99999999999).

The spelling of 201022220101 in words is "two hundred one billion, twenty-two million, two hundred twenty thousand, one hundred one".