20232221329 has 2 divisors, whose sum is σ = 20232221330. Its totient is φ = 20232221328.

The previous prime is 20232221309. The next prime is 20232221363. The reversal of 20232221329 is 92312223202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17173578304 + 3058643025 = 131048^2 + 55305^2 .

It is a cyclic number.

It is not a de Polignac number, because 20232221329 - 2⁹ = 20232220817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20232221297 and 20232221306.

It is not a weakly prime, because it can be changed into another prime (20232221309) 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 as a sum of consecutive naturals, namely, 10116110664 + 10116110665.

It is an arithmetic number, because the mean of its divisors is an integer number (10116110665).

Almost surely, 2^20232221329 is an apocalyptic number.

It is an amenable number.

20232221329 is a deficient number, since it is larger than the sum of its proper divisors (1).

20232221329 is an equidigital number, since it uses as much as digits as its factorization.

20232221329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 20232221329 in words is "twenty billion, two hundred thirty-two million, two hundred twenty-one thousand, three hundred twenty-nine".