22022122020021 has 24 divisors (see below), whose sum is σ = 31889407619160. Its totient is φ = 14644686336000.

The previous prime is 22022122019983. The next prime is 22022122020121. The reversal of 22022122020021 is 12002022122022.

22022122020021 is a `hidden beast` number, since 2 + 2 + 0 + 221 + 220 + 200 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 998420624100 + 21023701395921 = 999210^2 + 4585161^2 .

It is not a de Polignac number, because 22022122020021 - 2¹⁵ = 22022121987253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22022122019976 and 22022122020003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022122020121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3982381 + ... + 7739741.

It is an arithmetic number, because the mean of its divisors is an integer number (1328725317465).

Almost surely, 2^{22022122020021} is an apocalyptic number.

It is an amenable number.

22022122020021 is a deficient number, since it is larger than the sum of its proper divisors (9867285599139).

22022122020021 is a wasteful number, since it uses less digits than its factorization.

22022122020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3758997 (or 3758994 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22022122020021 its reverse (12002022122022), we get a palindrome (34024144142043).

The spelling of 22022122020021 in words is "twenty-two trillion, twenty-two billion, one hundred twenty-two million, twenty thousand, twenty-one".