9221222221229 has 2 divisors, whose sum is σ = 9221222221230. Its totient is φ = 9221222221228.

The previous prime is 9221222221193. The next prime is 9221222221271.

9221222221229 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7912490797225 + 1308731424004 = 2812915^2 + 1143998^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 9221222221229 - 2¹² = 9221222217133 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9221222221192 and 9221222221201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9221222221529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4610611110614 + 4610611110615.

It is an arithmetic number, because the mean of its divisors is an integer number (4610611110615).

Almost surely, 2^{9221222221229} is an apocalyptic number.

It is an amenable number.

9221222221229 is a deficient number, since it is larger than the sum of its proper divisors (1).

9221222221229 is an equidigital number, since it uses as much as digits as its factorization.

9221222221229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The spelling of 9221222221229 in words is "nine trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-nine".