1170821220986 has 8 divisors (see below), whose sum is σ = 1799066754324. Its totient is φ = 571132302880.

The previous prime is 1170821220977. The next prime is 1170821220997. The reversal of 1170821220986 is 6890221280711.

It can be written as a sum of positive squares in 2 ways, for example, as 811503697225 + 359317523761 = 900835^2 + 599431^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1170821220986² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1170821220986.

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, 7139153705 + ... + 7139153868.

Almost surely, 2^{1170821220986} is an apocalyptic number.

1170821220986 is a deficient number, since it is larger than the sum of its proper divisors (628245533338).

1170821220986 is a wasteful number, since it uses less digits than its factorization.

1170821220986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14278307616.

The product of its (nonzero) digits is 193536, while the sum is 47.

The spelling of 1170821220986 in words is "one trillion, one hundred seventy billion, eight hundred twenty-one million, two hundred twenty thousand, nine hundred eighty-six".