11145321 has 24 divisors (see below), whose sum is σ = 17749056. Its totient is φ = 6683040.

The previous prime is 11145313. The next prime is 11145331. The reversal of 11145321 is 12354111.

It is not a de Polignac number, because 11145321 - 2³ = 11145313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11145294 and 11145303.

It is not an unprimeable number, because it can be changed into a prime (11145331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9651 + ... + 10743.

It is an arithmetic number, because the mean of its divisors is an integer number (739544).

Almost surely, 2^11145321 is an apocalyptic number.

11145321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11145321 is a deficient number, since it is larger than the sum of its proper divisors (6603735).

11145321 is a wasteful number, since it uses less digits than its factorization.

11145321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213 (or 1210 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 11145321 is about 3338.4608729173. The cubic root of 11145321 is about 223.3730943291.

Adding to 11145321 its reverse (12354111), we get a palindrome (23499432).

The spelling of 11145321 in words is "eleven million, one hundred forty-five thousand, three hundred twenty-one".