1170020011 has 4 divisors (see below), whose sum is σ = 1207762624. Its totient is φ = 1132277400.

The previous prime is 1170020003. The next prime is 1170020029. The reversal of 1170020011 is 1100200711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1170020011 - 2³ = 1170020003 is a prime.

It is a super-2 number, since 2×1170020011² = 2737893652280880242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1170019973 and 1170020000.

It is not an unprimeable number, because it can be changed into a prime (1170030011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18871260 + ... + 18871321.

It is an arithmetic number, because the mean of its divisors is an integer number (301940656).

Almost surely, 2^1170020011 is an apocalyptic number.

1170020011 is a deficient number, since it is larger than the sum of its proper divisors (37742613).

1170020011 is an equidigital number, since it uses as much as digits as its factorization.

1170020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37742612.

The product of its (nonzero) digits is 14, while the sum is 13.

The square root of 1170020011 is about 34205.5552651905. Note that the first 3 decimals coincide. The cubic root of 1170020011 is about 1053.7342504472.

Adding to 1170020011 its reverse (1100200711), we get a palindrome (2270220722).

The spelling of 1170020011 in words is "one billion, one hundred seventy million, twenty thousand, eleven".