1123210221103 has 4 divisors (see below), whose sum is σ = 1124914637880. Its totient is φ = 1121505804328.

The previous prime is 1123210221053. The next prime is 1123210221131. The reversal of 1123210221103 is 3011220123211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123210221103 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 (1123210221503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 852207400 + ... + 852208717.

It is an arithmetic number, because the mean of its divisors is an integer number (281228659470).

Almost surely, 2^{1123210221103} is an apocalyptic number.

1123210221103 is a deficient number, since it is larger than the sum of its proper divisors (1704416777).

1123210221103 is an equidigital number, since it uses as much as digits as its factorization.

1123210221103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704416776.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1123210221103 its reverse (3011220123211), we get a palindrome (4134430344314).

The spelling of 1123210221103 in words is "one trillion, one hundred twenty-three billion, two hundred ten million, two hundred twenty-one thousand, one hundred three".