20022200917 has 2 divisors, whose sum is σ = 20022200918. Its totient is φ = 20022200916.

The previous prime is 20022200819. The next prime is 20022200927. The reversal of 20022200917 is 71900222002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15584775921 + 4437424996 = 124839^2 + 66614^2 .

It is a cyclic number.

It is not a de Polignac number, because 20022200917 - 2¹⁹ = 20021676629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20022200891 and 20022200900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20022200927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011100458 + 10011100459.

It is an arithmetic number, because the mean of its divisors is an integer number (10011100459).

Almost surely, 2^20022200917 is an apocalyptic number.

It is an amenable number.

20022200917 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022200917 is an equidigital number, since it uses as much as digits as its factorization.

20022200917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 20022200917 its reverse (71900222002), we get a palindrome (91922422919).

The spelling of 20022200917 in words is "twenty billion, twenty-two million, two hundred thousand, nine hundred seventeen".