201022022212221 has 48 divisors (see below), whose sum is σ = 330269876819136. Its totient is φ = 108066812281344.

The previous prime is 201022022212201. The next prime is 201022022212247. The reversal of 201022022212221 is 122212220220102.

It is not a de Polignac number, because 201022022212221 - 2¹¹ = 201022022210173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201022022212201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11174131 + ... + 22954416.

It is an arithmetic number, because the mean of its divisors is an integer number (6880622433732).

Almost surely, 2^{201022022212221} is an apocalyptic number.

201022022212221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201022022212221 is a deficient number, since it is larger than the sum of its proper divisors (129247854606915).

201022022212221 is a wasteful number, since it uses less digits than its factorization.

201022022212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34130938 (or 34130931 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 201022022212221 its reverse (122212220220102), we get a palindrome (323234242432323).

The spelling of 201022022212221 in words is "two hundred one trillion, twenty-two billion, twenty-two million, two hundred twelve thousand, two hundred twenty-one".