1167221 has 8 divisors (see below), whose sum is σ = 1317600. Its totient is φ = 1024240.

The previous prime is 1167217. The next prime is 1167233. The reversal of 1167221 is 1227611.

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 1167221 - 2² = 1167217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1167193 and 1167202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1167211) 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, 1511 + ... + 2148.

It is an arithmetic number, because the mean of its divisors is an integer number (164700).

2^1167221 is an apocalyptic number.

1167221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1167221 is a deficient number, since it is larger than the sum of its proper divisors (150379).

1167221 is a wasteful number, since it uses less digits than its factorization.

1167221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3699.

The product of its digits is 168, while the sum is 20.

The square root of 1167221 is about 1080.3800257317. The cubic root of 1167221 is about 105.2893305051.

It can be divided in two parts, 116 and 7221, that added together give a palindrome (7337).

The spelling of 1167221 in words is "one million, one hundred sixty-seven thousand, two hundred twenty-one".