220021101017 has 2 divisors, whose sum is σ = 220021101018. Its totient is φ = 220021101016.

The previous prime is 220021101007. The next prime is 220021101061. The reversal of 220021101017 is 710101120022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214039470736 + 5981630281 = 462644^2 + 77341^2 .

It is a cyclic number.

It is not a de Polignac number, because 220021101017 - 2⁶ = 220021100953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220021100986 and 220021101004.

It is not a weakly prime, because it can be changed into another prime (220021101007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110010550508 + 110010550509.

It is an arithmetic number, because the mean of its divisors is an integer number (110010550509).

Almost surely, 2^220021101017 is an apocalyptic number.

It is an amenable number.

220021101017 is a deficient number, since it is larger than the sum of its proper divisors (1).

220021101017 is an equidigital number, since it uses as much as digits as its factorization.

220021101017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 17.

Adding to 220021101017 its reverse (710101120022), we get a palindrome (930122221039).

The spelling of 220021101017 in words is "two hundred twenty billion, twenty-one million, one hundred one thousand, seventeen".