2022011221 has 2 divisors, whose sum is σ = 2022011222. Its totient is φ = 2022011220.

The previous prime is 2022011219. The next prime is 2022011237. The reversal of 2022011221 is 1221102202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1745986225 + 276024996 = 41785^2 + 16614^2 .

It is a cyclic number.

It is not a de Polignac number, because 2022011221 - 2¹ = 2022011219 is a prime.

Together with 2022011219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2022011281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011005610 + 1011005611.

It is an arithmetic number, because the mean of its divisors is an integer number (1011005611).

Almost surely, 2^2022011221 is an apocalyptic number.

It is an amenable number.

2022011221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2022011221 is an equidigital number, since it uses as much as digits as its factorization.

2022011221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2022011221 is about 44966.7790818956. The cubic root of 2022011221 is about 1264.5262633709.

Adding to 2022011221 its reverse (1221102202), we get a palindrome (3243113423).

The spelling of 2022011221 in words is "two billion, twenty-two million, eleven thousand, two hundred twenty-one".