1122171 has 8 divisors (see below), whose sum is σ = 1531200. Its totient is φ = 730632.

The previous prime is 1122157. The next prime is 1122179. The reversal of 1122171 is 1712211.

1122171 = 69² + 70² + ... + 154².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1122171 - 2⁵ = 1122139 is a prime.

1122171 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1122171.

It is not an unprimeable number, because it can be changed into a prime (1122179) 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, 4221 + ... + 4478.

It is an arithmetic number, because the mean of its divisors is an integer number (191400).

2^1122171 is an apocalyptic number.

1122171 is a deficient number, since it is larger than the sum of its proper divisors (409029).

1122171 is an equidigital number, since it uses as much as digits as its factorization.

1122171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8745.

The product of its digits is 28, while the sum is 15.

The square root of 1122171 is about 1059.3257289427. The cubic root of 1122171 is about 103.9169393510.

Adding to 1122171 its reverse (1712211), we get a palindrome (2834382).

The spelling of 1122171 in words is "one million, one hundred twenty-two thousand, one hundred seventy-one".