1122161 has 4 divisors (see below), whose sum is σ = 1128000. Its totient is φ = 1116324.

The previous prime is 1122157. The next prime is 1122179. The reversal of 1122161 is 1612211.

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.

It is a cyclic number.

It is not a de Polignac number, because 1122161 - 2² = 1122157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122131) 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 3 ways as a sum of consecutive naturals, for example, 2621 + ... + 3018.

It is an arithmetic number, because the mean of its divisors is an integer number (282000).

2^1122161 is an apocalyptic number.

It is an amenable number.

1122161 is a deficient number, since it is larger than the sum of its proper divisors (5839).

1122161 is an equidigital number, since it uses as much as digits as its factorization.

1122161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5838.

The product of its digits is 24, while the sum is 14.

The square root of 1122161 is about 1059.3210089487. The cubic root of 1122161 is about 103.9166306719.

Adding to 1122161 its reverse (1612211), we get a palindrome (2734372).

The spelling of 1122161 in words is "one million, one hundred twenty-two thousand, one hundred sixty-one".