1152221 has 8 divisors (see below), whose sum is σ = 1324224. Its totient is φ = 982080.

The previous prime is 1152187. The next prime is 1152227. The reversal of 1152221 is 1222511.

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 1152221 - 2⁶ = 1152157 is a prime.

It is a super-2 number, since 2×1152221² = 2655226465682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1152196 and 1152205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1152227) 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, 1346 + ... + 2028.

It is an arithmetic number, because the mean of its divisors is an integer number (165528).

2^1152221 is an apocalyptic number.

It is an amenable number.

1152221 is a deficient number, since it is larger than the sum of its proper divisors (172003).

1152221 is an equidigital number, since it uses as much as digits as its factorization.

1152221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931.

The product of its digits is 40, while the sum is 14.

The square root of 1152221 is about 1073.4155765592. The cubic root of 1152221 is about 104.8363588565.

Adding to 1152221 its reverse (1222511), we get a palindrome (2374732).

The spelling of 1152221 in words is "one million, one hundred fifty-two thousand, two hundred twenty-one".