1211334103 has 4 divisors (see below), whose sum is σ = 1384381840. Its totient is φ = 1038286368.

The previous prime is 1211334043. The next prime is 1211334221. The reversal of 1211334103 is 3014331121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3014331121 = 89 ⋅33868889.

It is not a de Polignac number, because 1211334103 - 2¹⁷ = 1211203031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211334403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86523858 + ... + 86523871.

It is an arithmetic number, because the mean of its divisors is an integer number (346095460).

Almost surely, 2^1211334103 is an apocalyptic number.

1211334103 is a deficient number, since it is larger than the sum of its proper divisors (173047737).

1211334103 is an equidigital number, since it uses as much as digits as its factorization.

1211334103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173047736.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1211334103 is about 34804.2253612977. The cubic root of 1211334103 is about 1065.9937246409.

Adding to 1211334103 its reverse (3014331121), we get a palindrome (4225665224).

The spelling of 1211334103 in words is "one billion, two hundred eleven million, three hundred thirty-four thousand, one hundred three".