1123312222013 has 4 divisors (see below), whose sum is σ = 1129518367068. Its totient is φ = 1117106076960.

The previous prime is 1123312222007. The next prime is 1123312222033. The reversal of 1123312222013 is 3102222133211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 589152958969 + 534159263044 = 767563^2 + 730862^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123312222013 - 2²⁶ = 1123245113149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123312222013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123312222033) 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, 3103072256 + ... + 3103072617.

It is an arithmetic number, because the mean of its divisors is an integer number (282379591767).

Almost surely, 2^{1123312222013} is an apocalyptic number.

It is an amenable number.

1123312222013 is a deficient number, since it is larger than the sum of its proper divisors (6206145055).

1123312222013 is an equidigital number, since it uses as much as digits as its factorization.

1123312222013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6206145054.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1123312222013 its reverse (3102222133211), we get a palindrome (4225534355224).

The spelling of 1123312222013 in words is "one trillion, one hundred twenty-three billion, three hundred twelve million, two hundred twenty-two thousand, thirteen".