11752021 has 4 divisors (see below), whose sum is σ = 12002112. Its totient is φ = 11501932.

The previous prime is 11752019. The next prime is 11752087. The reversal of 11752021 is 12025711.

11752021 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: 12025711 = 23 ⋅522857.

It is a cyclic number.

It is not a de Polignac number, because 11752021 - 2¹ = 11752019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11752021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11752921) 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, 124975 + ... + 125068.

It is an arithmetic number, because the mean of its divisors is an integer number (3000528).

Almost surely, 2^11752021 is an apocalyptic number.

It is an amenable number.

11752021 is a deficient number, since it is larger than the sum of its proper divisors (250091).

11752021 is an equidigital number, since it uses as much as digits as its factorization.

11752021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250090.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 11752021 is about 3428.1220806733. The cubic root of 11752021 is about 227.3548307046.

Adding to 11752021 its reverse (12025711), we get a palindrome (23777732).

The spelling of 11752021 in words is "eleven million, seven hundred fifty-two thousand, twenty-one".