21422040204222 has 96 divisors (see below), whose sum is σ = 53609090056704. Its totient is φ = 6055824600000.

The previous prime is 21422040204203. The next prime is 21422040204239. The reversal of 21422040204222 is 22240204022412.

21422040204222 is a `hidden beast` number, since 2 + 14 + 2 + 20 + 402 + 0 + 4 + 222 = 666.

It is a super-2 number, since 2×21422040204222² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2532628 + ... + 7018424.

It is an arithmetic number, because the mean of its divisors is an integer number (558428021424).

Almost surely, 2^{21422040204222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21422040204222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26804545028352).

21422040204222 is an abundant number, since it is smaller than the sum of its proper divisors (32187049852482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21422040204222 is a wasteful number, since it uses less digits than its factorization.

21422040204222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486214 (or 4486211 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 21422040204222 its reverse (22240204022412), we get a palindrome (43662244226634).

The spelling of 21422040204222 in words is "twenty-one trillion, four hundred twenty-two billion, forty million, two hundred four thousand, two hundred twenty-two".