11443322021 has 4 divisors (see below), whose sum is σ = 11444090412. Its totient is φ = 11442553632.

The previous prime is 11443322003. The next prime is 11443322029. The reversal of 11443322021 is 12022334411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9548025796 + 1895296225 = 97714^2 + 43535^2 .

It is a cyclic number.

It is not a de Polignac number, because 11443322021 - 2¹⁴ = 11443305637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11443322029) 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, 361406 + ... + 391791.

It is an arithmetic number, because the mean of its divisors is an integer number (2861022603).

Almost surely, 2^11443322021 is an apocalyptic number.

It is an amenable number.

11443322021 is a deficient number, since it is larger than the sum of its proper divisors (768391).

11443322021 is an equidigital number, since it uses as much as digits as its factorization.

11443322021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768390.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 11443322021 its reverse (12022334411), we get a palindrome (23465656432).

The spelling of 11443322021 in words is "eleven billion, four hundred forty-three million, three hundred twenty-two thousand, twenty-one".