1211103011303 has 32 divisors (see below), whose sum is σ = 1257239077440. Its totient is φ = 1165767966720.

The previous prime is 1211103011299. The next prime is 1211103011311. The reversal of 1211103011303 is 3031103011121.

It is a cyclic number.

It is not a de Polignac number, because 1211103011303 - 2² = 1211103011299 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 (1211103011903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1132930253 + ... + 1132931321.

It is an arithmetic number, because the mean of its divisors is an integer number (39288721170).

Almost surely, 2^{1211103011303} is an apocalyptic number.

1211103011303 is a deficient number, since it is larger than the sum of its proper divisors (46136066137).

1211103011303 is a wasteful number, since it uses less digits than its factorization.

1211103011303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 1211103011303 its reverse (3031103011121), we get a palindrome (4242206022424).

The spelling of 1211103011303 in words is "one trillion, two hundred eleven billion, one hundred three million, eleven thousand, three hundred three".