11443434421 has 8 divisors (see below), whose sum is σ = 12166277760. Its totient is φ = 10739366352.

The previous prime is 11443434413. The next prime is 11443434427. The reversal of 11443434421 is 12443434411.

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 11443434421 - 2³ = 11443434413 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 (11443434427) 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, 4692561 + ... + 4694998.

It is an arithmetic number, because the mean of its divisors is an integer number (1520784720).

Almost surely, 2^11443434421 is an apocalyptic number.

It is an amenable number.

11443434421 is a deficient number, since it is larger than the sum of its proper divisors (722843339).

11443434421 is an equidigital number, since it uses as much as digits as its factorization.

11443434421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9387635.

The product of its digits is 18432, while the sum is 31.

Adding to 11443434421 its reverse (12443434411), we get a palindrome (23886868832).

The spelling of 11443434421 in words is "eleven billion, four hundred forty-three million, four hundred thirty-four thousand, four hundred twenty-one".