1223320010321 has 4 divisors (see below), whose sum is σ = 1223409441444. Its totient is φ = 1223230579200.

The previous prime is 1223320010293. The next prime is 1223320010413. The reversal of 1223320010321 is 1230100233221.

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 859210348096 + 364109662225 = 926936^2 + 603415^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223320010321 - 2²² = 1223315816017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223320010293 and 1223320010302.

It is not an unprimeable number, because it can be changed into a prime (1223320030321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44695040 + ... + 44722401.

It is an arithmetic number, because the mean of its divisors is an integer number (305852360361).

Almost surely, 2^{1223320010321} is an apocalyptic number.

It is an amenable number.

1223320010321 is a deficient number, since it is larger than the sum of its proper divisors (89431123).

1223320010321 is an equidigital number, since it uses as much as digits as its factorization.

1223320010321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89431122.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1223320010321 its reverse (1230100233221), we get a palindrome (2453420243542).

The spelling of 1223320010321 in words is "one trillion, two hundred twenty-three billion, three hundred twenty million, ten thousand, three hundred twenty-one".