20130343440121 has 8 divisors (see below), whose sum is σ = 20510351319744. Its totient is φ = 19750342600560.

The previous prime is 20130343440079. The next prime is 20130343440167. The reversal of 20130343440121 is 12104434303102.

It is a happy number.

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 20130343440121 - 2²⁵ = 20130309885689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20130343440121.

It is not an unprimeable number, because it can be changed into a prime (20130383440121) 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, 4201570 + ... + 7610116.

It is an arithmetic number, because the mean of its divisors is an integer number (2563793914968).

Almost surely, 2^{20130343440121} is an apocalyptic number.

It is an amenable number.

20130343440121 is a deficient number, since it is larger than the sum of its proper divisors (380007879623).

20130343440121 is a wasteful number, since it uses less digits than its factorization.

20130343440121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520031.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 20130343440121 its reverse (12104434303102), we get a palindrome (32234777743223).

The spelling of 20130343440121 in words is "twenty trillion, one hundred thirty billion, three hundred forty-three million, four hundred forty thousand, one hundred twenty-one".