22211023217 has 2 divisors, whose sum is σ = 22211023218. Its totient is φ = 22211023216.

The previous prime is 22211023183. The next prime is 22211023229. The reversal of 22211023217 is 71232011222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12792514816 + 9418508401 = 113104^2 + 97049^2 .

It is a cyclic number.

It is not a de Polignac number, because 22211023217 - 2¹² = 22211019121 is a prime.

It is a super-2 number, since 2×22211023217² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22211023192 and 22211023201.

It is not a weakly prime, because it can be changed into another prime (22211026217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105511608 + 11105511609.

It is an arithmetic number, because the mean of its divisors is an integer number (11105511609).

Almost surely, 2^22211023217 is an apocalyptic number.

It is an amenable number.

22211023217 is a deficient number, since it is larger than the sum of its proper divisors (1).

22211023217 is an equidigital number, since it uses as much as digits as its factorization.

22211023217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 22211023217 its reverse (71232011222), we get a palindrome (93443034439).

The spelling of 22211023217 in words is "twenty-two billion, two hundred eleven million, twenty-three thousand, two hundred seventeen".