1177221 has 12 divisors (see below), whose sum is σ = 1658112. Its totient is φ = 742824.

The previous prime is 1177219. The next prime is 1177223. The reversal of 1177221 is 1227711.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1177219) and next prime (1177223).

It is not a de Polignac number, because 1177221 - 2¹ = 1177219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1177223) 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 11 ways as a sum of consecutive naturals, for example, 540 + ... + 1626.

It is an arithmetic number, because the mean of its divisors is an integer number (138176).

2^1177221 is an apocalyptic number.

It is an amenable number.

1177221 is a deficient number, since it is larger than the sum of its proper divisors (480891).

1177221 is a wasteful number, since it uses less digits than its factorization.

1177221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128 (or 1109 counting only the distinct ones).

The product of its digits is 196, while the sum is 21.

The square root of 1177221 is about 1084.9981566805. The cubic root of 1177221 is about 105.5891596712.

The spelling of 1177221 in words is "one million, one hundred seventy-seven thousand, two hundred twenty-one".