1220232017 has 2 divisors, whose sum is σ = 1220232018. Its totient is φ = 1220232016.

The previous prime is 1220232007. The next prime is 1220232047. The reversal of 1220232017 is 7102320221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1214452801 + 5779216 = 34849^2 + 2404^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220232017 - 2¹⁶ = 1220166481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220232017.

It is not a weakly prime, because it can be changed into another prime (1220232007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610116008 + 610116009.

It is an arithmetic number, because the mean of its divisors is an integer number (610116009).

Almost surely, 2^1220232017 is an apocalyptic number.

It is an amenable number.

1220232017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220232017 is an equidigital number, since it uses as much as digits as its factorization.

1220232017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 1220232017 is about 34931.8195489442. The cubic root of 1220232017 is about 1068.5974627576.

Adding to 1220232017 its reverse (7102320221), we get a palindrome (8322552238).

It can be divided in two parts, 122023 and 2017, that multiplied together give a triangular number (246120391 = T₂₂₁₈₆).

The spelling of 1220232017 in words is "one billion, two hundred twenty million, two hundred thirty-two thousand, seventeen".