22120084817 has 2 divisors, whose sum is σ = 22120084818. Its totient is φ = 22120084816.

The previous prime is 22120084793. The next prime is 22120084879. The reversal of 22120084817 is 71848002122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22118828176 + 1256641 = 148724^2 + 1121^2 .

It is a cyclic number.

It is not a de Polignac number, because 22120084817 - 2³⁴ = 4940215633 is a prime.

It is a super-2 number, since 2×22120084817² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22120084117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060042408 + 11060042409.

It is an arithmetic number, because the mean of its divisors is an integer number (11060042409).

Almost surely, 2^22120084817 is an apocalyptic number.

It is an amenable number.

22120084817 is a deficient number, since it is larger than the sum of its proper divisors (1).

22120084817 is an equidigital number, since it uses as much as digits as its factorization.

22120084817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14336, while the sum is 35.

Adding to 22120084817 its reverse (71848002122), we get a palindrome (93968086939).

The spelling of 22120084817 in words is "twenty-two billion, one hundred twenty million, eighty-four thousand, eight hundred seventeen".