120100203 has 6 divisors (see below), whose sum is σ = 173478084. Its totient is φ = 80066796.

The previous prime is 120100199. The next prime is 120100213. The reversal of 120100203 is 302001021.

It is a happy number.

It is not a de Polignac number, because 120100203 - 2² = 120100199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 13344467 = 120100203 / (1 + 2 + 0 + 1 + 0 + 0 + 2 + 0 + 3).

It is not an unprimeable number, because it can be changed into a prime (120100213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6672225 + ... + 6672242.

It is an arithmetic number, because the mean of its divisors is an integer number (28913014).

Almost surely, 2^120100203 is an apocalyptic number.

120100203 is a deficient number, since it is larger than the sum of its proper divisors (53377881).

120100203 is a wasteful number, since it uses less digits than its factorization.

120100203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13344473 (or 13344470 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 120100203 is about 10959.0238160157. The cubic root of 120100203 is about 493.3796665861.

Adding to 120100203 its reverse (302001021), we get a palindrome (422101224).

The spelling of 120100203 in words is "one hundred twenty million, one hundred thousand, two hundred three".