100121031203 has 4 divisors (see below), whose sum is σ = 100253292240. Its totient is φ = 99988770168.

The previous prime is 100121031193. The next prime is 100121031217. The reversal of 100121031203 is 302130121001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302130121001 = 37747 ⋅8004083.

It is a cyclic number.

It is not a de Polignac number, because 100121031203 - 2¹⁰ = 100121030179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100121031403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66129383 + ... + 66130896.

It is an arithmetic number, because the mean of its divisors is an integer number (25063323060).

Almost surely, 2^100121031203 is an apocalyptic number.

100121031203 is a deficient number, since it is larger than the sum of its proper divisors (132261037).

100121031203 is an equidigital number, since it uses as much as digits as its factorization.

100121031203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132261036.

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

Adding to 100121031203 its reverse (302130121001), we get a palindrome (402251152204).

The spelling of 100121031203 in words is "one hundred billion, one hundred twenty-one million, thirty-one thousand, two hundred three".