100103203000121 has 16 divisors (see below), whose sum is σ = 101584587646080. Its totient is φ = 98629817616000.

The previous prime is 100103203000081. The next prime is 100103203000169. The reversal of 100103203000121 is 121000302301001.

It is a cyclic number.

It is not a de Polignac number, because 100103203000121 - 2³⁴ = 100086023130937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100103203000096 and 100103203000105.

It is not an unprimeable number, because it can be changed into a prime (100103203000721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242909996 + ... + 243321746.

It is an arithmetic number, because the mean of its divisors is an integer number (6349036727880).

Almost surely, 2^{100103203000121} is an apocalyptic number.

It is an amenable number.

100103203000121 is a deficient number, since it is larger than the sum of its proper divisors (1481384645959).

100103203000121 is an equidigital number, since it uses as much as digits as its factorization.

100103203000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421456.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 100103203000121 its reverse (121000302301001), we get a palindrome (221103505301122).

The spelling of 100103203000121 in words is "one hundred trillion, one hundred three billion, two hundred three million, one hundred twenty-one", and thus it is an aban number.