1210120003 has 2 divisors, whose sum is σ = 1210120004. Its totient is φ = 1210120002.

The previous prime is 1210119991. The next prime is 1210120049. The reversal of 1210120003 is 3000210121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1210120003 - 2²⁵ = 1176565571 is a prime.

It is not a weakly prime, because it can be changed into another prime (1210120103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605060001 + 605060002.

It is an arithmetic number, because the mean of its divisors is an integer number (605060002).

Almost surely, 2^1210120003 is an apocalyptic number.

1210120003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210120003 is an equidigital number, since it uses as much as digits as its factorization.

1210120003 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1210120003 is about 34786.7791409323. The cubic root of 1210120003 is about 1065.6374630030.

Adding to 1210120003 its reverse (3000210121), we get a palindrome (4210330124).

The spelling of 1210120003 in words is "one billion, two hundred ten million, one hundred twenty thousand, three".