1123212322321 has 4 divisors (see below), whose sum is σ = 1129417915444. Its totient is φ = 1117006729200.

The previous prime is 1123212322319. The next prime is 1123212322327. The reversal of 1123212322321 is 1232232123211.

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 608493603600 + 514718718721 = 780060^2 + 717439^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123212322321 - 2¹ = 1123212322319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123212322327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3102796290 + ... + 3102796651.

It is an arithmetic number, because the mean of its divisors is an integer number (282354478861).

Almost surely, 2^{1123212322321} is an apocalyptic number.

It is an amenable number.

1123212322321 is a deficient number, since it is larger than the sum of its proper divisors (6205593123).

1123212322321 is an equidigital number, since it uses as much as digits as its factorization.

1123212322321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6205593122.

The product of its digits is 1728, while the sum is 25.

Adding to 1123212322321 its reverse (1232232123211), we get a palindrome (2355444445532).

The spelling of 1123212322321 in words is "one trillion, one hundred twenty-three billion, two hundred twelve million, three hundred twenty-two thousand, three hundred twenty-one".