20000023321 has 2 divisors, whose sum is σ = 20000023322. Its totient is φ = 20000023320.

The previous prime is 20000023297. The next prime is 20000023339. The reversal of 20000023321 is 12332000002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19199982096 + 800041225 = 138564^2 + 28285^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000023321 - 2⁷ = 20000023193 is a prime.

It is not a weakly prime, because it can be changed into another prime (20000023361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000011660 + 10000011661.

It is an arithmetic number, because the mean of its divisors is an integer number (10000011661).

Almost surely, 2^20000023321 is an apocalyptic number.

It is an amenable number.

20000023321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000023321 is an equidigital number, since it uses as much as digits as its factorization.

20000023321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20000023321 its reverse (12332000002), we get a palindrome (32332023323).

The spelling of 20000023321 in words is "twenty billion, twenty-three thousand, three hundred twenty-one".