1175221 has 4 divisors (see below), whose sum is σ = 1195200. Its totient is φ = 1155244.

The previous prime is 1175219. The next prime is 1175243. The reversal of 1175221 is 1225711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1225711 = 113 ⋅10847.

It is a cyclic number.

It is not a de Polignac number, because 1175221 - 2¹ = 1175219 is a prime.

It is a super-2 number, since 2×1175221² = 2762288797682, 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 (1175021) 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 3 ways as a sum of consecutive naturals, for example, 9901 + ... + 10018.

It is an arithmetic number, because the mean of its divisors is an integer number (298800).

2^1175221 is an apocalyptic number.

It is an amenable number.

1175221 is a deficient number, since it is larger than the sum of its proper divisors (19979).

1175221 is an equidigital number, since it uses as much as digits as its factorization.

1175221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19978.

The product of its digits is 140, while the sum is 19.

The square root of 1175221 is about 1084.0761043395. The cubic root of 1175221 is about 105.5293300601.

The spelling of 1175221 in words is "one million, one hundred seventy-five thousand, two hundred twenty-one".