44111021 has 4 divisors (see below), whose sum is σ = 44366172. Its totient is φ = 43855872.

The previous prime is 44111017. The next prime is 44111029. The reversal of 44111021 is 12011144.

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 42120100 + 1990921 = 6490^2 + 1411^2 .

It is a cyclic number.

It is not a de Polignac number, because 44111021 - 2² = 44111017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44110987 and 44111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44111029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127316 + ... + 127661.

It is an arithmetic number, because the mean of its divisors is an integer number (11091543).

Almost surely, 2^44111021 is an apocalyptic number.

It is an amenable number.

44111021 is a deficient number, since it is larger than the sum of its proper divisors (255151).

44111021 is a wasteful number, since it uses less digits than its factorization.

44111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255150.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 44111021 is about 6641.6128312331. The cubic root of 44111021 is about 353.3315105123.

Adding to 44111021 its reverse (12011144), we get a palindrome (56122165).

The spelling of 44111021 in words is "forty-four million, one hundred eleven thousand, twenty-one".