1001217 has 20 divisors (see below), whose sum is σ = 1568560. Its totient is φ = 568008.

The previous prime is 1001197. The next prime is 1001219. The reversal of 1001217 is 7121001.

It is not a de Polignac number, because 1001217 - 2⁶ = 1001153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001219) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7134 + ... + 7272.

It is an arithmetic number, because the mean of its divisors is an integer number (78428).

2^1001217 is an apocalyptic number.

It is an amenable number.

1001217 is a deficient number, since it is larger than the sum of its proper divisors (567343).

1001217 is an frugal number, since it uses more digits than its factorization.

1001217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 14, while the sum is 12.

The square root of 1001217 is about 1000.6083149764. The cubic root of 1001217 is about 100.0405502212.

Adding to 1001217 its reverse (7121001), we get a palindrome (8122218).

It can be divided in two parts, 100121 and 7, that added together give a triangular number (100128 = T₄₄₇).

The spelling of 1001217 in words is "one million, one thousand, two hundred seventeen".