2022121011221 has 4 divisors (see below), whose sum is σ = 2024973086700. Its totient is φ = 2019268935744.

The previous prime is 2022121011187. The next prime is 2022121011223. The reversal of 2022121011221 is 1221101212202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 874253050225 + 1147867960996 = 935015^2 + 1071386^2 .

It is a cyclic number.

It is not a de Polignac number, because 2022121011221 - 2¹⁴ = 2022120994837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2022121011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022121011223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1426036676 + ... + 1426038093.

It is an arithmetic number, because the mean of its divisors is an integer number (506243271675).

Almost surely, 2^{2022121011221} is an apocalyptic number.

It is an amenable number.

2022121011221 is a deficient number, since it is larger than the sum of its proper divisors (2852075479).

2022121011221 is an equidigital number, since it uses as much as digits as its factorization.

2022121011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2852075478.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2022121011221 its reverse (1221101212202), we get a palindrome (3243222223423).

The spelling of 2022121011221 in words is "two trillion, twenty-two billion, one hundred twenty-one million, eleven thousand, two hundred twenty-one".