11821265 has 8 divisors (see below), whose sum is σ = 14212800. Its totient is φ = 9438832.

The previous prime is 11821237. The next prime is 11821267. The reversal of 11821265 is 56212811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11821265 - 2¹⁰ = 11820241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11821267) 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, 1022 + ... + 4968.

It is an arithmetic number, because the mean of its divisors is an integer number (1776600).

Almost surely, 2^11821265 is an apocalyptic number.

It is an amenable number.

11821265 is a deficient number, since it is larger than the sum of its proper divisors (2391535).

11821265 is an equidigital number, since it uses as much as digits as its factorization.

11821265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4551.

The product of its digits is 960, while the sum is 26.

The square root of 11821265 is about 3438.2066546384. The cubic root of 11821265 is about 227.8004884928.

The spelling of 11821265 in words is "eleven million, eight hundred twenty-one thousand, two hundred sixty-five".