11242013021 has 4 divisors (see below), whose sum is σ = 11249881500. Its totient is φ = 11234144544.

The previous prime is 11242012997. The next prime is 11242013023. The reversal of 11242013021 is 12031024211.

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 4536696025 + 6705316996 = 67355^2 + 81886^2 .

It is a cyclic number.

It is not a de Polignac number, because 11242013021 - 2¹⁴ = 11241996637 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 (11242013023) 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, 3932096 + ... + 3934953.

It is an arithmetic number, because the mean of its divisors is an integer number (2812470375).

Almost surely, 2^11242013021 is an apocalyptic number.

It is an amenable number.

11242013021 is a deficient number, since it is larger than the sum of its proper divisors (7868479).

11242013021 is an equidigital number, since it uses as much as digits as its factorization.

11242013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7868478.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11242013021 its reverse (12031024211), we get a palindrome (23273037232).

The spelling of 11242013021 in words is "eleven billion, two hundred forty-two million, thirteen thousand, twenty-one".