1220433017 has 4 divisors (see below), whose sum is σ = 1259801856. Its totient is φ = 1181064180.

The previous prime is 1220433007. The next prime is 1220433029. The reversal of 1220433017 is 7103340221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7103340221 = 79 ⋅89915699.

It is a cyclic number.

It is not a de Polignac number, because 1220433017 - 2⁶ = 1220432953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220432983 and 1220433001.

It is not an unprimeable number, because it can be changed into a prime (1220433007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19684373 + ... + 19684434.

It is an arithmetic number, because the mean of its divisors is an integer number (314950464).

Almost surely, 2^1220433017 is an apocalyptic number.

It is an amenable number.

1220433017 is a deficient number, since it is larger than the sum of its proper divisors (39368839).

1220433017 is an equidigital number, since it uses as much as digits as its factorization.

1220433017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39368838.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 1220433017 is about 34934.6964635447. The cubic root of 1220433017 is about 1068.6561336482.

Adding to 1220433017 its reverse (7103340221), we get a palindrome (8323773238).

The spelling of 1220433017 in words is "one billion, two hundred twenty million, four hundred thirty-three thousand, seventeen".