1171104012 has 36 divisors (see below), whose sum is σ = 3188006640. Its totient is φ = 360339552.

The previous prime is 1171104001. The next prime is 1171104017. The reversal of 1171104012 is 2104011711.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1171104012² = 2742969213844992288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1171104017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1250712 + ... + 1251647.

It is an arithmetic number, because the mean of its divisors is an integer number (88555740).

Almost surely, 2^1171104012 is an apocalyptic number.

1171104012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1171104012 is an abundant number, since it is smaller than the sum of its proper divisors (2016902628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1171104012 is a wasteful number, since it uses less digits than its factorization.

1171104012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502382 (or 2502377 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 18.

The square root of 1171104012 is about 34221.3969907717. The cubic root of 1171104012 is about 1054.0595714943.

Adding to 1171104012 its reverse (2104011711), we get a palindrome (3275115723).

The spelling of 1171104012 in words is "one billion, one hundred seventy-one million, one hundred four thousand, twelve".