2022220002221 has 4 divisors (see below), whose sum is σ = 2022451465692. Its totient is φ = 2021988538752.

The previous prime is 2022220002203. The next prime is 2022220002337. The reversal of 2022220002221 is 1222000222202.

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 1404251070121 + 617968932100 = 1185011^2 + 786110^2 .

It is a cyclic number.

It is not a de Polignac number, because 2022220002221 - 2¹⁸ = 2022219740077 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 2022220002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022220002721) 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, 115718630 + ... + 115736103.

It is an arithmetic number, because the mean of its divisors is an integer number (505612866423).

Almost surely, 2^{2022220002221} is an apocalyptic number.

It is an amenable number.

2022220002221 is a deficient number, since it is larger than the sum of its proper divisors (231463471).

2022220002221 is an equidigital number, since it uses as much as digits as its factorization.

2022220002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231463470.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 2022220002221 its reverse (1222000222202), we get a palindrome (3244220224423).

The spelling of 2022220002221 in words is "two trillion, twenty-two billion, two hundred twenty million, two thousand, two hundred twenty-one".