121160581 has 8 divisors (see below), whose sum is σ = 128824344. Its totient is φ = 113556480.

The previous prime is 121160563. The next prime is 121160591. The reversal of 121160581 is 185061121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24453025 + 96707556 = 4945^2 + 9834^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 121160581 - 2¹¹ = 121158533 is a prime.

It is a super-2 number, since 2×121160581² = 29359772776515122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121160531) by changing a digit.

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, 10690 + ... + 18883.

It is an arithmetic number, because the mean of its divisors is an integer number (16103043).

Almost surely, 2^121160581 is an apocalyptic number.

It is an amenable number.

121160581 is a deficient number, since it is larger than the sum of its proper divisors (7663763).

121160581 is a wasteful number, since it uses less digits than its factorization.

121160581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29831.

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 121160581 is about 11007.2967162696. The cubic root of 121160581 is about 494.8274486151.

The spelling of 121160581 in words is "one hundred twenty-one million, one hundred sixty thousand, five hundred eighty-one".