20112003231121 has 8 divisors (see below), whose sum is σ = 20387587980320. Its totient is φ = 19836420586272.

The previous prime is 20112003231119. The next prime is 20112003231143. The reversal of 20112003231121 is 12113230021102.

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 20112003231121 - 2¹ = 20112003231119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112003231161) 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, 35568550 + ... + 36129568.

It is an arithmetic number, because the mean of its divisors is an integer number (2548448497540).

Almost surely, 2^{20112003231121} is an apocalyptic number.

It is an amenable number.

20112003231121 is a deficient number, since it is larger than the sum of its proper divisors (275584749199).

20112003231121 is an equidigital number, since it uses as much as digits as its factorization.

20112003231121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052175.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20112003231121 its reverse (12113230021102), we get a palindrome (32225233252223).

The spelling of 20112003231121 in words is "twenty trillion, one hundred twelve billion, three million, two hundred thirty-one thousand, one hundred twenty-one".