1123223212321 has 8 divisors (see below), whose sum is σ = 1299149740224. Its totient is φ = 951163201680.

The previous prime is 1123223212301. The next prime is 1123223212351. The reversal of 1123223212321 is 1232123223211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123223212321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123223212301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 966628690 + ... + 966629851.

It is an arithmetic number, because the mean of its divisors is an integer number (162393717528).

Almost surely, 2^{1123223212321} is an apocalyptic number.

It is an amenable number.

1123223212321 is a deficient number, since it is larger than the sum of its proper divisors (175926527903).

1123223212321 is an equidigital number, since it uses as much as digits as its factorization.

1123223212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933258631.

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

Adding to 1123223212321 its reverse (1232123223211), we get a palindrome (2355346435532).

The spelling of 1123223212321 in words is "one trillion, one hundred twenty-three billion, two hundred twenty-three million, two hundred twelve thousand, three hundred twenty-one".