20123121101113 has 8 divisors (see below), whose sum is σ = 20618964159200. Its totient is φ = 19628544565728.

The previous prime is 20123121101093. The next prime is 20123121101249. The reversal of 20123121101113 is 31110112132102.

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 20123121101113 - 2¹⁷ = 20123120970041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20123121501113) 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, 316598508 + ... + 316662061.

It is an arithmetic number, because the mean of its divisors is an integer number (2577370519900).

Almost surely, 2^{20123121101113} is an apocalyptic number.

It is an amenable number.

20123121101113 is a deficient number, since it is larger than the sum of its proper divisors (495843058087).

20123121101113 is an equidigital number, since it uses as much as digits as its factorization.

20123121101113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633261351.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 20123121101113 its reverse (31110112132102), we get a palindrome (51233233233215).

The spelling of 20123121101113 in words is "twenty trillion, one hundred twenty-three billion, one hundred twenty-one million, one hundred one thousand, one hundred thirteen".