44021112133 has 4 divisors (see below), whose sum is σ = 44184759660. Its totient is φ = 43857464608.

The previous prime is 44021112097. The next prime is 44021112137. The reversal of 44021112133 is 33121112044.

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 18986910849 + 25034201284 = 137793^2 + 158222^2 .

It is a cyclic number.

It is not a de Polignac number, because 44021112133 - 2¹⁷ = 44020981061 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 (44021112137) 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, 81823360 + ... + 81823897.

It is an arithmetic number, because the mean of its divisors is an integer number (11046189915).

Almost surely, 2^44021112133 is an apocalyptic number.

It is an amenable number.

44021112133 is a deficient number, since it is larger than the sum of its proper divisors (163647527).

44021112133 is a wasteful number, since it uses less digits than its factorization.

44021112133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163647526.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 44021112133 its reverse (33121112044), we get a palindrome (77142224177).

The spelling of 44021112133 in words is "forty-four billion, twenty-one million, one hundred twelve thousand, one hundred thirty-three".