1170085221 has 12 divisors (see below), whose sum is σ = 1690546572. Its totient is φ = 779861376.

The previous prime is 1170085219. The next prime is 1170085247. The reversal of 1170085221 is 1225800711.

It can be written as a sum of positive squares in 2 ways, for example, as 658692225 + 511392996 = 25665^2 + 22614^2 .

It is not a de Polignac number, because 1170085221 - 2¹ = 1170085219 is a prime.

It is a super-3 number, since 3×1170085221³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1170085201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27955 + ... + 55871.

It is an arithmetic number, because the mean of its divisors is an integer number (140878881).

Almost surely, 2^1170085221 is an apocalyptic number.

It is an amenable number.

1170085221 is a deficient number, since it is larger than the sum of its proper divisors (520461351).

1170085221 is a wasteful number, since it uses less digits than its factorization.

1170085221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32580 (or 32577 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 1170085221 is about 34206.5084596484. The cubic root of 1170085221 is about 1053.7538263899.

Adding to 1170085221 its reverse (1225800711), we get a palindrome (2395885932).

The spelling of 1170085221 in words is "one billion, one hundred seventy million, eighty-five thousand, two hundred twenty-one".