2022121220221 has 2 divisors, whose sum is σ = 2022121220222. Its totient is φ = 2022121220220.

The previous prime is 2022121220209. The next prime is 2022121220269. The reversal of 2022121220221 is 1220221212202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1054821432025 + 967299788196 = 1027045^2 + 983514^2 .

It is a cyclic number.

It is not a de Polignac number, because 2022121220221 - 2²⁵ = 2022087665789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2022121230221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011060610110 + 1011060610111.

It is an arithmetic number, because the mean of its divisors is an integer number (1011060610111).

Almost surely, 2^{2022121220221} is an apocalyptic number.

It is an amenable number.

2022121220221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2022121220221 is an equidigital number, since it uses as much as digits as its factorization.

2022121220221 is an evil number, because the sum of its binary digits is even.

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

Adding to 2022121220221 its reverse (1220221212202), we get a palindrome (3242342432423).

The spelling of 2022121220221 in words is "two trillion, twenty-two billion, one hundred twenty-one million, two hundred twenty thousand, two hundred twenty-one".