100103200121 has 4 divisors (see below), whose sum is σ = 100103856000. Its totient is φ = 100102544244.

The previous prime is 100103200111. The next prime is 100103200187. The reversal of 100103200121 is 121002301001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 100103200121 - 2²⁶ = 100036091257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100103200111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34580 + ... + 448778.

It is an arithmetic number, because the mean of its divisors is an integer number (25025964000).

Almost surely, 2^100103200121 is an apocalyptic number.

It is an amenable number.

100103200121 is a deficient number, since it is larger than the sum of its proper divisors (655879).

100103200121 is an equidigital number, since it uses as much as digits as its factorization.

100103200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655878.

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

Adding to 100103200121 its reverse (121002301001), we get a palindrome (221105501122).

The spelling of 100103200121 in words is "one hundred billion, one hundred three million, two hundred thousand, one hundred twenty-one".