1212203103 has 12 divisors (see below), whose sum is σ = 1673929608. Its totient is φ = 780267040.

The previous prime is 1212203101. The next prime is 1212203117. The reversal of 1212203103 is 3013022121.

It is not a de Polignac number, because 1212203103 - 2¹ = 1212203101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212203101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 237708 + ... + 242753.

It is an arithmetic number, because the mean of its divisors is an integer number (139494134).

Almost surely, 2^1212203103 is an apocalyptic number.

1212203103 is a deficient number, since it is larger than the sum of its proper divisors (461726505).

1212203103 is an equidigital number, since it uses as much as digits as its factorization.

1212203103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480522 (or 480493 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1212203103 is about 34816.7072394849. The cubic root of 1212203103 is about 1066.2485750890.

Adding to 1212203103 its reverse (3013022121), we get a palindrome (4225225224).

The spelling of 1212203103 in words is "one billion, two hundred twelve million, two hundred three thousand, one hundred three".