13220052017 has 4 divisors (see below), whose sum is σ = 13259280996. Its totient is φ = 13180823040.

The previous prime is 13220052007. The next prime is 13220052037. The reversal of 13220052017 is 71025002231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71025002231 = 5779 ⋅12290189.

It can be written as a sum of positive squares in 2 ways, for example, as 6934892176 + 6285159841 = 83276^2 + 79279^2 .

It is a cyclic number.

It is not a de Polignac number, because 13220052017 - 2⁶ = 13220051953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13220051983 and 13220052001.

It is not an unprimeable number, because it can be changed into a prime (13220052007) 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, 19613984 + ... + 19614657.

It is an arithmetic number, because the mean of its divisors is an integer number (3314820249).

Almost surely, 2^13220052017 is an apocalyptic number.

It is an amenable number.

13220052017 is a deficient number, since it is larger than the sum of its proper divisors (39228979).

13220052017 is an equidigital number, since it uses as much as digits as its factorization.

13220052017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39228978.

The product of its (nonzero) digits is 840, while the sum is 23.

Adding to 13220052017 its reverse (71025002231), we get a palindrome (84245054248).

The spelling of 13220052017 in words is "thirteen billion, two hundred twenty million, fifty-two thousand, seventeen".