11240143021 has 4 divisors (see below), whose sum is σ = 11272535712. Its totient is φ = 11207750332.

The previous prime is 11240143007. The next prime is 11240143037. The reversal of 11240143021 is 12034104211.

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.

It is a cyclic number.

It is not a de Polignac number, because 11240143021 - 2¹⁷ = 11240011949 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 11240143021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11240143051) 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, 16195825 + ... + 16196518.

It is an arithmetic number, because the mean of its divisors is an integer number (2818133928).

Almost surely, 2^11240143021 is an apocalyptic number.

It is an amenable number.

11240143021 is a deficient number, since it is larger than the sum of its proper divisors (32392691).

11240143021 is an equidigital number, since it uses as much as digits as its factorization.

11240143021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32392690.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 11240143021 its reverse (12034104211), we get a palindrome (23274247232).

The spelling of 11240143021 in words is "eleven billion, two hundred forty million, one hundred forty-three thousand, twenty-one".