201102102022221 has 32 divisors (see below), whose sum is σ = 299521692464000. Its totient is φ = 133352141408640.

The previous prime is 201102102022141. The next prime is 201102102022279. The reversal of 201102102022221 is 122220201201102.

It is a happy number.

201102102022221 is a `hidden beast` number, since 20 + 1 + 10 + 210 + 202 + 2 + 221 = 666.

It is not a de Polignac number, because 201102102022221 - 2¹⁹ = 201102101497933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201102102022194 and 201102102022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201102102042221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1211746 + ... + 20091603.

It is an arithmetic number, because the mean of its divisors is an integer number (9360052889500).

Almost surely, 2^{201102102022221} is an apocalyptic number.

It is an amenable number.

201102102022221 is a deficient number, since it is larger than the sum of its proper divisors (98419590441779).

201102102022221 is a wasteful number, since it uses less digits than its factorization.

201102102022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21305226 (or 21305220 counting only the distinct ones).

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

Adding to 201102102022221 its reverse (122220201201102), we get a palindrome (323322303223323).

The spelling of 201102102022221 in words is "two hundred one trillion, one hundred two billion, one hundred two million, twenty-two thousand, two hundred twenty-one".