1170721012 has 12 divisors (see below), whose sum is σ = 2062512900. Its totient is φ = 581431616.

The previous prime is 1170721007. The next prime is 1170721021. The reversal of 1170721012 is 2101270711.

It can be written as a sum of positive squares in 2 ways, for example, as 604471396 + 566249616 = 24586^2 + 23796^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 981553 + ... + 982744.

It is an arithmetic number, because the mean of its divisors is an integer number (171876075).

Almost surely, 2^1170721012 is an apocalyptic number.

It is an amenable number.

1170721012 is a deficient number, since it is larger than the sum of its proper divisors (891791888).

1170721012 is a wasteful number, since it uses less digits than its factorization.

1170721012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964450 (or 1964448 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 22.

The square root of 1170721012 is about 34215.8006190123. The cubic root of 1170721012 is about 1053.9446517749.

Adding to 1170721012 its reverse (2101270711), we get a palindrome (3271991723).

The spelling of 1170721012 in words is "one billion, one hundred seventy million, seven hundred twenty-one thousand, twelve".