1111444421 has 8 divisors (see below), whose sum is σ = 1121376960. Its totient is φ = 1101538528.

The previous prime is 1111444381. The next prime is 1111444423. The reversal of 1111444421 is 1244441111.

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

It is a cyclic number.

It is not a de Polignac number, because 1111444421 - 2²⁶ = 1044335557 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 (1111444423) 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, 82370 + ... + 94908.

It is an arithmetic number, because the mean of its divisors is an integer number (140172120).

Almost surely, 2^1111444421 is an apocalyptic number.

It is an amenable number.

1111444421 is a deficient number, since it is larger than the sum of its proper divisors (9932539).

1111444421 is a wasteful number, since it uses less digits than its factorization.

1111444421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13323.

The product of its digits is 512, while the sum is 23.

The square root of 1111444421 is about 33338.3326067756. The cubic root of 1111444421 is about 1035.8477254292.

Adding to 1111444421 its reverse (1244441111), we get a palindrome (2355885532).

The spelling of 1111444421 in words is "one billion, one hundred eleven million, four hundred forty-four thousand, four hundred twenty-one".