1111321 has 4 divisors (see below), whose sum is σ = 1113444. Its totient is φ = 1109200.

The previous prime is 1111301. The next prime is 1111333. The reversal of 1111321 is 1231111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1231111 = 7 ⋅175873.

It can be written as a sum of positive squares in 2 ways, for example, as 876096 + 235225 = 936^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111321 - 2⁵ = 1111289 is a prime.

It is a Duffinian number.

1111321 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1111298 and 1111307.

It is not an unprimeable number, because it can be changed into a prime (1111301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351 + ... + 1531.

It is an arithmetic number, because the mean of its divisors is an integer number (278361).

2^1111321 is an apocalyptic number.

It is an amenable number.

1111321 is a deficient number, since it is larger than the sum of its proper divisors (2123).

1111321 is an equidigital number, since it uses as much as digits as its factorization.

1111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2122.

The product of its digits is 6, while the sum is 10.

The square root of 1111321 is about 1054.1921077299. The cubic root of 1111321 is about 103.5809381903.

Adding to 1111321 its reverse (1231111), we get a palindrome (2342432).

The spelling of 1111321 in words is "one million, one hundred eleven thousand, three hundred twenty-one".