122020212221 has 2 divisors, whose sum is σ = 122020212222. Its totient is φ = 122020212220.

The previous prime is 122020212211. The next prime is 122020212229. The reversal of 122020212221 is 122212020221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121721440996 + 298771225 = 348886^2 + 17285^2 .

It is a cyclic number.

It is not a de Polignac number, because 122020212221 - 2¹⁰ = 122020211197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122020212221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122020212229) 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, 61010106110 + 61010106111.

It is an arithmetic number, because the mean of its divisors is an integer number (61010106111).

Almost surely, 2^122020212221 is an apocalyptic number.

It is an amenable number.

122020212221 is a deficient number, since it is larger than the sum of its proper divisors (1).

122020212221 is an equidigital number, since it uses as much as digits as its factorization.

122020212221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 122020212221 its reverse (122212020221), we get a palindrome (244232232442).

The spelling of 122020212221 in words is "one hundred twenty-two billion, twenty million, two hundred twelve thousand, two hundred twenty-one".