1113433021 has 4 divisors (see below), whose sum is σ = 1113865344. Its totient is φ = 1113000700.

The previous prime is 1113432997. The next prime is 1113433043. The reversal of 1113433021 is 1203343111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1113433021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1113433021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113433051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212275 + ... + 217456.

It is an arithmetic number, because the mean of its divisors is an integer number (278466336).

Almost surely, 2^1113433021 is an apocalyptic number.

It is an amenable number.

1113433021 is a deficient number, since it is larger than the sum of its proper divisors (432323).

1113433021 is an equidigital number, since it uses as much as digits as its factorization.

1113433021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432322.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1113433021 is about 33368.1438051325. The cubic root of 1113433021 is about 1036.4651380647.

Adding to 1113433021 its reverse (1203343111), we get a palindrome (2316776132).

The spelling of 1113433021 in words is "one billion, one hundred thirteen million, four hundred thirty-three thousand, twenty-one".