20044140121 has 8 divisors (see below), whose sum is σ = 20376340424. Its totient is φ = 19712056320.

The previous prime is 20044140107. The next prime is 20044140197. The reversal of 20044140121 is 12104144002.

It can be written as a sum of positive squares in 4 ways, for example, as 2076078096 + 17968062025 = 45564^2 + 134045^2 .

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 20044140121 - 2⁵ = 20044140089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20044149121) 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, 360631 + ... + 412483.

It is an arithmetic number, because the mean of its divisors is an integer number (2547042553).

Almost surely, 2^20044140121 is an apocalyptic number.

It is an amenable number.

20044140121 is a deficient number, since it is larger than the sum of its proper divisors (332200303).

20044140121 is an equidigital number, since it uses as much as digits as its factorization.

20044140121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58251.

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

Adding to 20044140121 its reverse (12104144002), we get a palindrome (32148284123).

The spelling of 20044140121 in words is "twenty billion, forty-four million, one hundred forty thousand, one hundred twenty-one".