1021117017 has 4 divisors (see below), whose sum is σ = 1361489360. Its totient is φ = 680744676.

The previous prime is 1021117007. The next prime is 1021117037. The reversal of 1021117017 is 7107111201.

1021117017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is not a de Polignac number, because 1021117017 - 2¹⁵ = 1021084249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021116984 and 1021117002.

It is not an unprimeable number, because it can be changed into a prime (1021117007) 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, 170186167 + ... + 170186172.

It is an arithmetic number, because the mean of its divisors is an integer number (340372340).

Almost surely, 2^1021117017 is an apocalyptic number.

It is an amenable number.

1021117017 is a deficient number, since it is larger than the sum of its proper divisors (340372343).

1021117017 is an equidigital number, since it uses as much as digits as its factorization.

1021117017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340372342.

The product of its (nonzero) digits is 98, while the sum is 21.

The square root of 1021117017 is about 31954.9216397099. The cubic root of 1021117017 is about 1006.9900312838.

Adding to 1021117017 its reverse (7107111201), we get a palindrome (8128228218).

The spelling of 1021117017 in words is "one billion, twenty-one million, one hundred seventeen thousand, seventeen".