100203000000121 has 4 divisors (see below), whose sum is σ = 100227565584000. Its totient is φ = 100178434416244.

The previous prime is 100203000000031. The next prime is 100203000000133. The reversal of 100203000000121 is 121000000302001.

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.

It is a cyclic number.

It is not a de Polignac number, because 100203000000121 - 2¹³ = 100202999991929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100203000000098 and 100203000000107.

It is not an unprimeable number, because it can be changed into a prime (100203000000161) 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, 12282785821 + ... + 12282793978.

It is an arithmetic number, because the mean of its divisors is an integer number (25056891396000).

Almost surely, 2^{100203000000121} is an apocalyptic number.

It is an amenable number.

100203000000121 is a deficient number, since it is larger than the sum of its proper divisors (24565583879).

100203000000121 is an equidigital number, since it uses as much as digits as its factorization.

100203000000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24565583878.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 100203000000121 its reverse (121000000302001), we get a palindrome (221203000302122).

The spelling of 100203000000121 in words is "one hundred trillion, two hundred three billion, one hundred twenty-one", and thus it is an aban number.