222022020221 has 2 divisors, whose sum is σ = 222022020222. Its totient is φ = 222022020220.

The previous prime is 222022020191. The next prime is 222022020239. The reversal of 222022020221 is 122020220222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221854188196 + 167832025 = 471014^2 + 12955^2 .

It is a cyclic number.

It is not a de Polignac number, because 222022020221 - 2²² = 222017825917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222022020221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222022020821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111011010110 + 111011010111.

It is an arithmetic number, because the mean of its divisors is an integer number (111011010111).

Almost surely, 2^222022020221 is an apocalyptic number.

It is an amenable number.

222022020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

222022020221 is an equidigital number, since it uses as much as digits as its factorization.

222022020221 is an odious number, because the sum of its binary digits is odd.

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

Adding to 222022020221 its reverse (122020220222), we get a palindrome (344042240443).

The spelling of 222022020221 in words is "two hundred twenty-two billion, twenty-two million, twenty thousand, two hundred twenty-one".