20001103121 has 8 divisors (see below), whose sum is σ = 20046571584. Its totient is φ = 19955663280.

The previous prime is 20001103097. The next prime is 20001103193. The reversal of 20001103121 is 12130110002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20001103121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001100121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2007011 + ... + 2016951.

It is an arithmetic number, because the mean of its divisors is an integer number (2505821448).

Almost surely, 2^20001103121 is an apocalyptic number.

It is an amenable number.

20001103121 is a deficient number, since it is larger than the sum of its proper divisors (45468463).

20001103121 is an equidigital number, since it uses as much as digits as its factorization.

20001103121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14311.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20001103121 its reverse (12130110002), we get a palindrome (32131213123).

The spelling of 20001103121 in words is "twenty billion, one million, one hundred three thousand, one hundred twenty-one".