12120021203 has 4 divisors (see below), whose sum is σ = 12120511488. Its totient is φ = 12119530920.

The previous prime is 12120021197. The next prime is 12120021209. The reversal of 12120021203 is 30212002121.

It is a happy number.

12120021203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30212002121 = 7 ⋅4316000303.

It is an interprime number because it is at equal distance from previous prime (12120021197) and next prime (12120021209).

It is a cyclic number.

It is not a de Polignac number, because 12120021203 - 2¹⁰ = 12120020179 is a prime.

It is a super-2 number, since 2×12120021203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120021209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205976 + ... + 258197.

It is an arithmetic number, because the mean of its divisors is an integer number (3030127872).

Almost surely, 2^12120021203 is an apocalyptic number.

12120021203 is a deficient number, since it is larger than the sum of its proper divisors (490285).

12120021203 is an equidigital number, since it uses as much as digits as its factorization.

12120021203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490284.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12120021203 its reverse (30212002121), we get a palindrome (42332023324).

The spelling of 12120021203 in words is "twelve billion, one hundred twenty million, twenty-one thousand, two hundred three".