20103110112321 has 12 divisors (see below), whose sum is σ = 29822631818772. Its totient is φ = 13039855207776.

The previous prime is 20103110112301. The next prime is 20103110112377. The reversal of 20103110112321 is 12321101130102.

20103110112321 is a `hidden beast` number, since 20 + 1 + 0 + 311 + 0 + 1 + 12 + 321 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10197235142721 + 9905874969600 = 3193311^2 + 3147360^2 .

It is not a de Polignac number, because 20103110112321 - 2³⁵ = 20068750373953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20103110112294 and 20103110112303.

It is not an unprimeable number, because it can be changed into a prime (20103110112301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30184849686 + ... + 30184850351.

It is an arithmetic number, because the mean of its divisors is an integer number (2485219318231).

Almost surely, 2^{20103110112321} is an apocalyptic number.

It is an amenable number.

20103110112321 is a deficient number, since it is larger than the sum of its proper divisors (9719521706451).

20103110112321 is a wasteful number, since it uses less digits than its factorization.

20103110112321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60369700080 (or 60369700077 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 20103110112321 its reverse (12321101130102), we get a palindrome (32424211242423).

The spelling of 20103110112321 in words is "twenty trillion, one hundred three billion, one hundred ten million, one hundred twelve thousand, three hundred twenty-one".