22220220021017 has 2 divisors, whose sum is σ = 22220220021018. Its totient is φ = 22220220021016.

The previous prime is 22220220020989. The next prime is 22220220021023. The reversal of 22220220021017 is 71012002202222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19773861261961 + 2446358759056 = 4446781^2 + 1564084^2 .

It is a cyclic number.

It is not a de Polignac number, because 22220220021017 - 2¹² = 22220220016921 is a prime.

It is a super-3 number, since 3×22220220021017³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22220220020983 and 22220220021001.

It is not a weakly prime, because it can be changed into another prime (22220220029017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110110010508 + 11110110010509.

It is an arithmetic number, because the mean of its divisors is an integer number (11110110010509).

Almost surely, 2^{22220220021017} is an apocalyptic number.

It is an amenable number.

22220220021017 is a deficient number, since it is larger than the sum of its proper divisors (1).

22220220021017 is an equidigital number, since it uses as much as digits as its factorization.

22220220021017 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 23.

Adding to 22220220021017 its reverse (71012002202222), we get a palindrome (93232222223239).

The spelling of 22220220021017 in words is "twenty-two trillion, two hundred twenty billion, two hundred twenty million, twenty-one thousand, seventeen".