1170221145 has 8 divisors (see below), whose sum is σ = 1872353856. Its totient is φ = 624117936.

The previous prime is 1170221141. The next prime is 1170221147. The reversal of 1170221145 is 5411220711.

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

It is not a de Polignac number, because 1170221145 - 2² = 1170221141 is a prime.

It is a super-2 number, since 2×1170221145² = 2738835056410222050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1170221141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39007357 + ... + 39007386.

It is an arithmetic number, because the mean of its divisors is an integer number (234044232).

Almost surely, 2^1170221145 is an apocalyptic number.

1170221145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1170221145 is a deficient number, since it is larger than the sum of its proper divisors (702132711).

1170221145 is an equidigital number, since it uses as much as digits as its factorization.

1170221145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78014751.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 1170221145 is about 34208.4952168317. The cubic root of 1170221145 is about 1053.7946282297.

Adding to 1170221145 its reverse (5411220711), we get a palindrome (6581441856).

The spelling of 1170221145 in words is "one billion, one hundred seventy million, two hundred twenty-one thousand, one hundred forty-five".