1166121712 has 40 divisors (see below), whose sum is σ = 2694398976. Its totient is φ = 478036416.

The previous prime is 1166121709. The next prime is 1166121731. The reversal of 1166121712 is 2171216611.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 223768 + ... + 228919.

Almost surely, 2^1166121712 is an apocalyptic number.

It is an amenable number.

1166121712 is an abundant number, since it is smaller than the sum of its proper divisors (1528277264).

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

1166121712 is a wasteful number, since it uses less digits than its factorization.

1166121712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452725 (or 452719 counting only the distinct ones).

The product of its digits is 1008, while the sum is 28.

The square root of 1166121712 is about 34148.5243019373. The cubic root of 1166121712 is about 1052.5626631464.

The spelling of 1166121712 in words is "one billion, one hundred sixty-six million, one hundred twenty-one thousand, seven hundred twelve".