1220265017 has 8 divisors (see below), whose sum is σ = 1229385600. Its totient is φ = 1211170384.

The previous prime is 1220264989. The next prime is 1220265019. The reversal of 1220265017 is 7105620221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220265017 - 2⁸ = 1220264761 is a prime.

It is a super-3 number, since 3×1220265017³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220265019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93584 + ... + 105822.

It is an arithmetic number, because the mean of its divisors is an integer number (153673200).

Almost surely, 2^1220265017 is an apocalyptic number.

It is an amenable number.

1220265017 is a deficient number, since it is larger than the sum of its proper divisors (9120583).

1220265017 is a wasteful number, since it uses less digits than its factorization.

1220265017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12975.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1220265017 is about 34932.2918944635. The cubic root of 1220265017 is about 1068.6070957339.

Adding to 1220265017 its reverse (7105620221), we get a palindrome (8325885238).

The spelling of 1220265017 in words is "one billion, two hundred twenty million, two hundred sixty-five thousand, seventeen".