11131021443 has 8 divisors (see below), whose sum is σ = 14842699456. Its totient is φ = 7420012200.

The previous prime is 11131021423. The next prime is 11131021453. The reversal of 11131021443 is 34412013111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11131021443 - 2¹² = 11131017347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11131021403) 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, 126973 + ... + 195918.

It is an arithmetic number, because the mean of its divisors is an integer number (1855337432).

Almost surely, 2^11131021443 is an apocalyptic number.

11131021443 is a deficient number, since it is larger than the sum of its proper divisors (3711678013).

11131021443 is a wasteful number, since it uses less digits than its factorization.

11131021443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334385.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 11131021443 its reverse (34412013111), we get a palindrome (45543034554).

The spelling of 11131021443 in words is "eleven billion, one hundred thirty-one million, twenty-one thousand, four hundred forty-three".