22122110202021 has 12 divisors (see below), whose sum is σ = 31975561851948. Its totient is φ = 14738195312064.

The previous prime is 22122110201993. The next prime is 22122110202053. The reversal of 22122110202021 is 12020201122122.

It is a happy number.

22122110202021 is a `hidden beast` number, since 221 + 221 + 1 + 0 + 20 + 202 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7338469699521 + 14783640502500 = 2708961^2 + 3844950^2 .

It is not a de Polignac number, because 22122110202021 - 2³⁹ = 21572354388133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22122110201985 and 22122110202003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122110202821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 823165480 + ... + 823192353.

It is an arithmetic number, because the mean of its divisors is an integer number (2664630154329).

Almost surely, 2^{22122110202021} is an apocalyptic number.

It is an amenable number.

22122110202021 is a deficient number, since it is larger than the sum of its proper divisors (9853451649927).

22122110202021 is a wasteful number, since it uses less digits than its factorization.

22122110202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646359332 (or 1646359329 counting only the distinct ones).

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

Adding to 22122110202021 its reverse (12020201122122), we get a palindrome (34142311324143).

The spelling of 22122110202021 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred ten million, two hundred two thousand, twenty-one".