201022111102221 has 6 divisors (see below), whose sum is σ = 290365271592110. Its totient is φ = 134014740734808.

The previous prime is 201022111102177. The next prime is 201022111102237. The reversal of 201022111102221 is 122201111220102.

201022111102221 is a `hidden beast` number, since 20 + 102 + 211 + 110 + 2 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 138392519481225 + 62629591620996 = 11764035^2 + 7913886^2 .

It is a de Polignac number, because none of the positive numbers 2^k-201022111102221 is a prime.

It is a super-2 number, since 2×201022111102221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201022111102194 and 201022111102203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201022111102621) 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 5 ways as a sum of consecutive naturals, for example, 11167895061226 + ... + 11167895061243.

Almost surely, 2^{201022111102221} is an apocalyptic number.

It is an amenable number.

201022111102221 is a deficient number, since it is larger than the sum of its proper divisors (89343160489889).

201022111102221 is a wasteful number, since it uses less digits than its factorization.

201022111102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22335790122475 (or 22335790122472 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 201022111102221 its reverse (122201111220102), we get a palindrome (323223222322323).

The spelling of 201022111102221 in words is "two hundred one trillion, twenty-two billion, one hundred eleven million, one hundred two thousand, two hundred twenty-one".