201022221200121 has 48 divisors (see below), whose sum is σ = 307157239509120. Its totient is φ = 126533940099840.

The previous prime is 201022221200107. The next prime is 201022221200167. The reversal of 201022221200121 is 121002122220102.

It is a happy number.

201022221200121 is a `hidden beast` number, since 20 + 102 + 2 + 221 + 200 + 121 = 666.

It is not a de Polignac number, because 201022221200121 - 2⁵ = 201022221200089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201022221200094 and 201022221200103.

It is not an unprimeable number, because it can be changed into a prime (201022221200191) 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 47 ways as a sum of consecutive naturals, for example, 56386101 + ... + 59845106.

It is an arithmetic number, because the mean of its divisors is an integer number (6399109156440).

Almost surely, 2^{201022221200121} is an apocalyptic number.

It is an amenable number.

201022221200121 is a deficient number, since it is larger than the sum of its proper divisors (106135018308999).

201022221200121 is a wasteful number, since it uses less digits than its factorization.

201022221200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116231406 (or 116231403 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 201022221200121 its reverse (121002122220102), we get a palindrome (322024343420223).

The spelling of 201022221200121 in words is "two hundred one trillion, twenty-two billion, two hundred twenty-one million, two hundred thousand, one hundred twenty-one".