11021443042 has 4 divisors (see below), whose sum is σ = 16532164566. Its totient is φ = 5510721520.

The previous prime is 11021443001. The next prime is 11021443049. The reversal of 11021443042 is 24034412011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10995829321 + 25613721 = 104861^2 + 5061^2 .

It is not an unprimeable number, because it can be changed into a prime (11021443049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2755360759 + ... + 2755360762.

Almost surely, 2^11021443042 is an apocalyptic number.

11021443042 is a deficient number, since it is larger than the sum of its proper divisors (5510721524).

11021443042 is an equidigital number, since it uses as much as digits as its factorization.

11021443042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510721523.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 11021443042 its reverse (24034412011), we get a palindrome (35055855053).

The spelling of 11021443042 in words is "eleven billion, twenty-one million, four hundred forty-three thousand, forty-two".