222020101817 has 2 divisors, whose sum is σ = 222020101818. Its totient is φ = 222020101816.

The previous prime is 222020101781. The next prime is 222020101843. The reversal of 222020101817 is 718101020222.

Together with previous prime (222020101781) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (222020101843) can be obtained adding 222020101817 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194323154041 + 27696947776 = 440821^2 + 166424^2 .

It is a cyclic number.

It is not a de Polignac number, because 222020101817 - 2⁸ = 222020101561 is a prime.

It is a super-2 number, since 2×222020101817² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222020101867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111010050908 + 111010050909.

It is an arithmetic number, because the mean of its divisors is an integer number (111010050909).

Almost surely, 2^222020101817 is an apocalyptic number.

It is an amenable number.

222020101817 is a deficient number, since it is larger than the sum of its proper divisors (1).

222020101817 is an equidigital number, since it uses as much as digits as its factorization.

222020101817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 26.

The spelling of 222020101817 in words is "two hundred twenty-two billion, twenty million, one hundred one thousand, eight hundred seventeen".