10422222221 has 2 divisors, whose sum is σ = 10422222222. Its totient is φ = 10422222220.

The previous prime is 10422222211. The next prime is 10422222233. The reversal of 10422222221 is 12222222401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10331706025 + 90516196 = 101645^2 + 9514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10422222221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10422222193 and 10422222202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10422222211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5211111110 + 5211111111.

It is an arithmetic number, because the mean of its divisors is an integer number (5211111111).

Almost surely, 2^10422222221 is an apocalyptic number.

It is an amenable number.

10422222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10422222221 is an equidigital number, since it uses as much as digits as its factorization.

10422222221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 10422222221 its reverse (12222222401), we get a palindrome (22644444622).

The spelling of 10422222221 in words is "ten billion, four hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-one".