1111433404021 has 4 divisors (see below), whose sum is σ = 1111668832044. Its totient is φ = 1111197976000.

The previous prime is 1111433404009. The next prime is 1111433404187. The reversal of 1111433404021 is 1204043341111.

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 179077080625 + 932356323396 = 423175^2 + 965586^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111433404021 - 2⁵ = 1111433403989 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 (1111436404021) 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, 117706930 + ... + 117716371.

It is an arithmetic number, because the mean of its divisors is an integer number (277917208011).

Almost surely, 2^{1111433404021} is an apocalyptic number.

It is an amenable number.

1111433404021 is a deficient number, since it is larger than the sum of its proper divisors (235428023).

1111433404021 is an equidigital number, since it uses as much as digits as its factorization.

1111433404021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235428022.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 1111433404021 its reverse (1204043341111), we get a palindrome (2315476745132).

The spelling of 1111433404021 in words is "one trillion, one hundred eleven billion, four hundred thirty-three million, four hundred four thousand, twenty-one".