1171211516 has 12 divisors (see below), whose sum is σ = 2120296920. Its totient is φ = 565412400.

The previous prime is 1171211501. The next prime is 1171211521. The reversal of 1171211516 is 6151121711.

It is a super-2 number, since 2×1171211516² = 2743472830422036512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 5048210 + ... + 5048441.

It is an arithmetic number, because the mean of its divisors is an integer number (176691410).

Almost surely, 2^1171211516 is an apocalyptic number.

It is an amenable number.

1171211516 is a deficient number, since it is larger than the sum of its proper divisors (949085404).

1171211516 is a wasteful number, since it uses less digits than its factorization.

1171211516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10096684 (or 10096682 counting only the distinct ones).

The product of its digits is 420, while the sum is 26.

The square root of 1171211516 is about 34222.9676679273. The cubic root of 1171211516 is about 1054.0918237258.

The spelling of 1171211516 in words is "one billion, one hundred seventy-one million, two hundred eleven thousand, five hundred sixteen".