1170212981065 has 4 divisors (see below), whose sum is σ = 1404255577284. Its totient is φ = 936170384848.

The previous prime is 1170212981027. The next prime is 1170212981089. The reversal of 1170212981065 is 5601892120711.

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

It can be written as a sum of positive squares in 2 ways, for example, as 580456563129 + 589756417936 = 761877^2 + 767956^2 .

It is a cyclic number.

It is not a de Polignac number, because 1170212981065 - 2²⁹ = 1169676110153 is a prime.

It is a Duffinian 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, 117021298102 + ... + 117021298111.

It is an arithmetic number, because the mean of its divisors is an integer number (351063894321).

Almost surely, 2^{1170212981065} is an apocalyptic number.

It is an amenable number.

1170212981065 is a deficient number, since it is larger than the sum of its proper divisors (234042596219).

1170212981065 is an equidigital number, since it uses as much as digits as its factorization.

1170212981065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234042596218.

The product of its (nonzero) digits is 60480, while the sum is 43.

The spelling of 1170212981065 in words is "one trillion, one hundred seventy billion, two hundred twelve million, nine hundred eighty-one thousand, sixty-five".