11451321 has 16 divisors (see below), whose sum is σ = 19388800. Its totient is φ = 6543504.

The previous prime is 11451313. The next prime is 11451337. The reversal of 11451321 is 12315411.

It is not a de Polignac number, because 11451321 - 2³ = 11451313 is a prime.

It is a super-2 number, since 2×11451321² = 262265505290082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11451294 and 11451303.

It is not an unprimeable number, because it can be changed into a prime (11451301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30106 + ... + 30483.

It is an arithmetic number, because the mean of its divisors is an integer number (1211800).

Almost surely, 2^11451321 is an apocalyptic number.

It is an amenable number.

11451321 is a deficient number, since it is larger than the sum of its proper divisors (7937479).

11451321 is an equidigital number, since it uses as much as digits as its factorization.

11451321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60605 (or 60599 counting only the distinct ones).

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

The square root of 11451321 is about 3383.9800531327. The cubic root of 11451321 is about 225.3989366909.

Adding to 11451321 its reverse (12315411), we get a palindrome (23766732).

The spelling of 11451321 in words is "eleven million, four hundred fifty-one thousand, three hundred twenty-one".