11243421135021 has 32 divisors (see below), whose sum is σ = 15529399175808. Its totient is φ = 7230774620160.

The previous prime is 11243421135017. The next prime is 11243421135029. The reversal of 11243421135021 is 12053112434211.

11243421135021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11243421135021 - 2² = 11243421135017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11243421135021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11243421135029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12609490 + ... + 13471676.

It is an arithmetic number, because the mean of its divisors is an integer number (485293724244).

Almost surely, 2^{11243421135021} is an apocalyptic number.

It is an amenable number.

11243421135021 is a deficient number, since it is larger than the sum of its proper divisors (4285978040787).

11243421135021 is a wasteful number, since it uses less digits than its factorization.

11243421135021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863421.

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 11243421135021 its reverse (12053112434211), we get a palindrome (23296533569232).

The spelling of 11243421135021 in words is "eleven trillion, two hundred forty-three billion, four hundred twenty-one million, one hundred thirty-five thousand, twenty-one".