44121145345021 has 8 divisors (see below), whose sum is σ = 44170930898424. Its totient is φ = 44071384089600.

The previous prime is 44121145344961. The next prime is 44121145345091. The reversal of 44121145345021 is 12054354112144.

It can be written as a sum of positive squares in 4 ways, for example, as 28367192079396 + 15753953265625 = 5326086^2 + 3969125^2 .

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 44121145345021 - 2¹⁹ = 44121144820733 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 (44121145345091) 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, 2439550 + ... + 9705343.

It is an arithmetic number, because the mean of its divisors is an integer number (5521366362303).

Almost surely, 2^{44121145345021} is an apocalyptic number.

It is an amenable number.

44121145345021 is a deficient number, since it is larger than the sum of its proper divisors (49785553403).

44121145345021 is a wasteful number, since it uses less digits than its factorization.

44121145345021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12148991.

The product of its (nonzero) digits is 76800, while the sum is 37.

Adding to 44121145345021 its reverse (12054354112144), we get a palindrome (56175499457165).

The spelling of 44121145345021 in words is "forty-four trillion, one hundred twenty-one billion, one hundred forty-five million, three hundred forty-five thousand, twenty-one".