44020140121 has 4 divisors (see below), whose sum is σ = 44274591972. Its totient is φ = 43765688272.

The previous prime is 44020140107. The next prime is 44020140161. The reversal of 44020140121 is 12104102044.

44020140121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 33329614096 + 10690526025 = 182564^2 + 103395^2 .

It is a cyclic number.

It is not a de Polignac number, because 44020140121 - 2²³ = 44011751513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44020140161) 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, 127225666 + ... + 127226011.

It is an arithmetic number, because the mean of its divisors is an integer number (11068647993).

Almost surely, 2^44020140121 is an apocalyptic number.

It is an amenable number.

44020140121 is a deficient number, since it is larger than the sum of its proper divisors (254451851).

44020140121 is a wasteful number, since it uses less digits than its factorization.

44020140121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254451850.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 44020140121 its reverse (12104102044), we get a palindrome (56124242165).

The spelling of 44020140121 in words is "forty-four billion, twenty million, one hundred forty thousand, one hundred twenty-one".