44123213021 has 8 divisors (see below), whose sum is σ = 44850292344. Its totient is φ = 43396254720.

The previous prime is 44123212967. The next prime is 44123213077. The reversal of 44123213021 is 12031232144.

It can be written as a sum of positive squares in 4 ways, for example, as 13482460996 + 30640752025 = 116114^2 + 175045^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44123213021 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 (44123213081) 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, 980405 + ... + 1024421.

It is an arithmetic number, because the mean of its divisors is an integer number (5606286543).

Almost surely, 2^44123213021 is an apocalyptic number.

It is an amenable number.

44123213021 is a deficient number, since it is larger than the sum of its proper divisors (727079323).

44123213021 is a wasteful number, since it uses less digits than its factorization.

44123213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60511.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 44123213021 its reverse (12031232144), we get a palindrome (56154445165).

The spelling of 44123213021 in words is "forty-four billion, one hundred twenty-three million, two hundred thirteen thousand, twenty-one".