1213011103103 has 16 divisors (see below), whose sum is σ = 1280811299040. Its totient is φ = 1145612160000.

The previous prime is 1213011103097. The next prime is 1213011103111. The reversal of 1213011103103 is 3013011103121.

It is a cyclic number.

It is not a de Polignac number, because 1213011103103 - 2³⁰ = 1211937361279 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 (1213011103133) 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, 7928951 + ... + 8080487.

It is an arithmetic number, because the mean of its divisors is an integer number (80050706190).

Almost surely, 2^{1213011103103} is an apocalyptic number.

1213011103103 is a deficient number, since it is larger than the sum of its proper divisors (67800195937).

1213011103103 is a wasteful number, since it uses less digits than its factorization.

1213011103103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152858.

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

Adding to 1213011103103 its reverse (3013011103121), we get a palindrome (4226022206224).

The spelling of 1213011103103 in words is "one trillion, two hundred thirteen billion, eleven million, one hundred three thousand, one hundred three".