201102212022221 has 16 divisors (see below), whose sum is σ = 211955802842160. Its totient is φ = 190543915699200.

The previous prime is 201102212022209. The next prime is 201102212022247. The reversal of 201102212022221 is 122220212201102.

It can be written as a sum of positive squares in 8 ways, for example, as 4031461622500 + 197070750399721 = 2007850^2 + 14038189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201102212022221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201102212022193 and 201102212022202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201102212022421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303469910 + ... + 304131863.

It is an arithmetic number, because the mean of its divisors is an integer number (13247237677635).

Almost surely, 2^{201102212022221} is an apocalyptic number.

It is an amenable number.

201102212022221 is a deficient number, since it is larger than the sum of its proper divisors (10853590819939).

201102212022221 is a wasteful number, since it uses less digits than its factorization.

201102212022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607602016.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 201102212022221 its reverse (122220212201102), we get a palindrome (323322424223323).

The spelling of 201102212022221 in words is "two hundred one trillion, one hundred two billion, two hundred twelve million, twenty-two thousand, two hundred twenty-one".