11433144021 has 16 divisors (see below), whose sum is σ = 16446865344. Its totient is φ = 7022905344.

The previous prime is 11433144017. The next prime is 11433144029. The reversal of 11433144021 is 12044133411.

It is not a de Polignac number, because 11433144021 - 2² = 11433144017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11433143982 and 11433144000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11433144029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246636 + ... + 289301.

It is an arithmetic number, because the mean of its divisors is an integer number (1027929084).

Almost surely, 2^11433144021 is an apocalyptic number.

It is an amenable number.

11433144021 is a deficient number, since it is larger than the sum of its proper divisors (5013721323).

11433144021 is a wasteful number, since it uses less digits than its factorization.

11433144021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536500.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 11433144021 its reverse (12044133411), we get a palindrome (23477277432).

The spelling of 11433144021 in words is "eleven billion, four hundred thirty-three million, one hundred forty-four thousand, twenty-one".