1211133323103 has 16 divisors (see below), whose sum is σ = 1761735475200. Its totient is φ = 733983943680.

The previous prime is 1211133323089. The next prime is 1211133323117. The reversal of 1211133323103 is 3013233311121.

It is an interprime number because it is at equal distance from previous prime (1211133323089) and next prime (1211133323117).

It is not a de Polignac number, because 1211133323103 - 2¹⁰ = 1211133322079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211133323143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220258 + ... + 1571871.

It is an arithmetic number, because the mean of its divisors is an integer number (110108467200).

Almost surely, 2^{1211133323103} is an apocalyptic number.

1211133323103 is a deficient number, since it is larger than the sum of its proper divisors (550602152097).

1211133323103 is a wasteful number, since it uses less digits than its factorization.

1211133323103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812622.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1211133323103 its reverse (3013233311121), we get a palindrome (4224366634224).

The spelling of 1211133323103 in words is "one trillion, two hundred eleven billion, one hundred thirty-three million, three hundred twenty-three thousand, one hundred three".