12100000203 has 12 divisors (see below), whose sum is σ = 17478798480. Its totient is φ = 8066195856.

The previous prime is 12100000201. The next prime is 12100000249. The reversal of 12100000203 is 30200000121.

It is a happy number.

It is not a de Polignac number, because 12100000203 - 2¹ = 12100000201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (12100000201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200658 + ... + 253896.

It is an arithmetic number, because the mean of its divisors is an integer number (1456566540).

Almost surely, 2^12100000203 is an apocalyptic number.

12100000203 is a deficient number, since it is larger than the sum of its proper divisors (5378798277).

12100000203 is a wasteful number, since it uses less digits than its factorization.

12100000203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78498 (or 78495 counting only the distinct ones).

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

Adding to 12100000203 its reverse (30200000121), we get a palindrome (42300000324).

The spelling of 12100000203 in words is "twelve billion, one hundred million, two hundred three", and thus it is an aban number.