20222020112221 has 2 divisors, whose sum is σ = 20222020112222. Its totient is φ = 20222020112220.

The previous prime is 20222020112207. The next prime is 20222020112249. The reversal of 20222020112221 is 12221102022202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12702024720100 + 7519995392121 = 3563990^2 + 2742261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20222020112221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20222020112251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111010056110 + 10111010056111.

It is an arithmetic number, because the mean of its divisors is an integer number (10111010056111).

Almost surely, 2^{20222020112221} is an apocalyptic number.

It is an amenable number.

20222020112221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222020112221 is an equidigital number, since it uses as much as digits as its factorization.

20222020112221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20222020112221 its reverse (12221102022202), we get a palindrome (32443122134423).

The spelling of 20222020112221 in words is "twenty trillion, two hundred twenty-two billion, twenty million, one hundred twelve thousand, two hundred twenty-one".