22111221011017 has 2 divisors, whose sum is σ = 22111221011018. Its totient is φ = 22111221011016.

The previous prime is 22111221010961. The next prime is 22111221011027. The reversal of 22111221011017 is 71011012211122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11385569811001 + 10725651200016 = 3374251^2 + 3275004^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111221011017 - 2²³ = 22111212622409 is a prime.

It is not a weakly prime, because it can be changed into another prime (22111221011027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055610505508 + 11055610505509.

It is an arithmetic number, because the mean of its divisors is an integer number (11055610505509).

Almost surely, 2^{22111221011017} is an apocalyptic number.

It is an amenable number.

22111221011017 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111221011017 is an equidigital number, since it uses as much as digits as its factorization.

22111221011017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 22.

Adding to 22111221011017 its reverse (71011012211122), we get a palindrome (93122233222139).

The spelling of 22111221011017 in words is "twenty-two trillion, one hundred eleven billion, two hundred twenty-one million, eleven thousand, seventeen".