21022000112017 has 2 divisors, whose sum is σ = 21022000112018. Its totient is φ = 21022000112016.

The previous prime is 21022000111997. The next prime is 21022000112107. The reversal of 21022000112017 is 71021100022012.

Together with next prime (21022000112107) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15932423503936 + 5089576608081 = 3991544^2 + 2256009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21022000112017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21022000111985 and 21022000112003.

It is not a weakly prime, because it can be changed into another prime (21022000112417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511000056008 + 10511000056009.

It is an arithmetic number, because the mean of its divisors is an integer number (10511000056009).

Almost surely, 2^{21022000112017} is an apocalyptic number.

It is an amenable number.

21022000112017 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022000112017 is an equidigital number, since it uses as much as digits as its factorization.

21022000112017 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 19.

Adding to 21022000112017 its reverse (71021100022012), we get a palindrome (92043100134029).

The spelling of 21022000112017 in words is "twenty-one trillion, twenty-two billion, one hundred twelve thousand, seventeen".