20121103203 has 8 divisors (see below), whose sum is σ = 26831313600. Its totient is φ = 13412480808.

The previous prime is 20121103187. The next prime is 20121103229. The reversal of 20121103203 is 30230112102.

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

It is not a de Polignac number, because 20121103203 - 2⁴ = 20121103187 is a prime.

It is a super-3 number, since 3×20121103203³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20121103103) 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, 367113 + ... + 418346.

It is an arithmetic number, because the mean of its divisors is an integer number (3353914200).

Almost surely, 2^20121103203 is an apocalyptic number.

20121103203 is a deficient number, since it is larger than the sum of its proper divisors (6710210397).

20121103203 is an equidigital number, since it uses as much as digits as its factorization.

20121103203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794001.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20121103203 its reverse (30230112102), we get a palindrome (50351215305).

The spelling of 20121103203 in words is "twenty billion, one hundred twenty-one million, one hundred three thousand, two hundred three".