11853121 has 4 divisors (see below), whose sum is σ = 13546432. Its totient is φ = 10159812.

The previous prime is 11853031. The next prime is 11853133. The reversal of 11853121 is 12135811.

11853121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12135811 = 727 ⋅16693.

It is a cyclic number.

It is not a de Polignac number, because 11853121 - 2⁹ = 11852609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11853092 and 11853101.

It is not an unprimeable number, because it can be changed into a prime (11853161) 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, 846645 + ... + 846658.

It is an arithmetic number, because the mean of its divisors is an integer number (3386608).

Almost surely, 2^11853121 is an apocalyptic number.

It is an amenable number.

11853121 is a deficient number, since it is larger than the sum of its proper divisors (1693311).

11853121 is an equidigital number, since it uses as much as digits as its factorization.

11853121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693310.

The product of its digits is 240, while the sum is 22.

The square root of 11853121 is about 3442.8361854727. The cubic root of 11853121 is about 228.0049308978.

Adding to 11853121 its reverse (12135811), we get a palindrome (23988932).

The spelling of 11853121 in words is "eleven million, eight hundred fifty-three thousand, one hundred twenty-one".