1211103123103 has 8 divisors (see below), whose sum is σ = 1274857956720. Its totient is φ = 1147349545920.

The previous prime is 1211103123037. The next prime is 1211103123187. The reversal of 1211103123103 is 3013213011121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211103123103 - 2²¹ = 1211101025951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211103123193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2167101 + ... + 2668057.

It is an arithmetic number, because the mean of its divisors is an integer number (159357244590).

Almost surely, 2^{1211103123103} is an apocalyptic number.

1211103123103 is a deficient number, since it is larger than the sum of its proper divisors (63754833617).

1211103123103 is a wasteful number, since it uses less digits than its factorization.

1211103123103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628217.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1211103123103 its reverse (3013213011121), we get a palindrome (4224316134224).

The spelling of 1211103123103 in words is "one trillion, two hundred eleven billion, one hundred three million, one hundred twenty-three thousand, one hundred three".