20222322221 has 2 divisors, whose sum is σ = 20222322222. Its totient is φ = 20222322220.

The previous prime is 20222322203. The next prime is 20222322229. The reversal of 20222322221 is 12222322202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13285098121 + 6937224100 = 115261^2 + 83290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20222322221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20222322193 and 20222322202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20222322229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111161110 + 10111161111.

It is an arithmetic number, because the mean of its divisors is an integer number (10111161111).

Almost surely, 2^20222322221 is an apocalyptic number.

It is an amenable number.

20222322221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222322221 is an equidigital number, since it uses as much as digits as its factorization.

20222322221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20222322221 its reverse (12222322202), we get a palindrome (32444644423).

The spelling of 20222322221 in words is "twenty billion, two hundred twenty-two million, three hundred twenty-two thousand, two hundred twenty-one".