1232220130321 has 4 divisors (see below), whose sum is σ = 1232434472500. Its totient is φ = 1232005788144.

The previous prime is 1232220130319. The next prime is 1232220130327. The reversal of 1232220130321 is 1230310222321.

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 204723671296 + 1027496459025 = 452464^2 + 1013655^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232220130321 - 2¹ = 1232220130319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1232220130292 and 1232220130301.

It is not an unprimeable number, because it can be changed into a prime (1232220130327) 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, 107162466 + ... + 107173963.

It is an arithmetic number, because the mean of its divisors is an integer number (308108618125).

Almost surely, 2^{1232220130321} is an apocalyptic number.

It is an amenable number.

1232220130321 is a deficient number, since it is larger than the sum of its proper divisors (214342179).

1232220130321 is an equidigital number, since it uses as much as digits as its factorization.

1232220130321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214342178.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1232220130321 its reverse (1230310222321), we get a palindrome (2462530352642).

The spelling of 1232220130321 in words is "one trillion, two hundred thirty-two billion, two hundred twenty million, one hundred thirty thousand, three hundred twenty-one".