22020202212021 has 54 divisors (see below), whose sum is σ = 36349991645058. Its totient is φ = 12837688418880.

The previous prime is 22020202211989. The next prime is 22020202212157. The reversal of 22020202212021 is 12021220202022.

22020202212021 is a `hidden beast` number, since 220 + 2 + 0 + 20 + 221 + 202 + 1 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 285678491121 + 21734523720900 = 534489^2 + 4662030^2 .

It is not a de Polignac number, because 22020202212021 - 2⁵ = 22020202211989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22020202211985 and 22020202212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020202212521) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 19502790 + ... + 20600951.

It is an arithmetic number, because the mean of its divisors is an integer number (673147993427).

Almost surely, 2^{22020202212021} is an apocalyptic number.

It is an amenable number.

22020202212021 is a deficient number, since it is larger than the sum of its proper divisors (14329789433037).

22020202212021 is a wasteful number, since it uses less digits than its factorization.

22020202212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40103811 (or 40103776 counting only the distinct ones).

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

Adding to 22020202212021 its reverse (12021220202022), we get a palindrome (34041422414043).

The spelling of 22020202212021 in words is "twenty-two trillion, twenty billion, two hundred two million, two hundred twelve thousand, twenty-one".