11521330 has 16 divisors (see below), whose sum is σ = 20865600. Its totient is φ = 4580272.

The previous prime is 11521327. The next prime is 11521333. The reversal of 11521330 is 3312511.

It is an interprime number because it is at equal distance from previous prime (11521327) and next prime (11521333).

It is not an unprimeable number, because it can be changed into a prime (11521333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1780 + ... + 5119.

It is an arithmetic number, because the mean of its divisors is an integer number (1304100).

Almost surely, 2^11521330 is an apocalyptic number.

11521330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11521330 is a deficient number, since it is larger than the sum of its proper divisors (9344270).

11521330 is a wasteful number, since it uses less digits than its factorization.

11521330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7073.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 11521330 is about 3394.3084715447. The cubic root of 11521330 is about 225.8573381103.

Adding to 11521330 its reverse (3312511), we get a palindrome (14833841).

The spelling of 11521330 in words is "eleven million, five hundred twenty-one thousand, three hundred thirty".