11421043501 has 8 divisors (see below), whose sum is σ = 13086178560. Its totient is φ = 9764297808.

The previous prime is 11421043499. The next prime is 11421043519. The reversal of 11421043501 is 10534012411.

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 11421043501 - 2¹ = 11421043499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421043801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2094421 + ... + 2099866.

It is an arithmetic number, because the mean of its divisors is an integer number (1635772320).

Almost surely, 2^11421043501 is an apocalyptic number.

It is an amenable number.

11421043501 is a deficient number, since it is larger than the sum of its proper divisors (1665135059).

11421043501 is an equidigital number, since it uses as much as digits as its factorization.

11421043501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194683.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 11421043501 its reverse (10534012411), we get a palindrome (21955055912).

The spelling of 11421043501 in words is "eleven billion, four hundred twenty-one million, forty-three thousand, five hundred one".