10321123203221 has 2 divisors, whose sum is σ = 10321123203222. Its totient is φ = 10321123203220.

The previous prime is 10321123203203. The next prime is 10321123203283. The reversal of 10321123203221 is 12230232112301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9526019280625 + 795103922596 = 3086425^2 + 891686^2 .

It is a cyclic number.

It is not a de Polignac number, because 10321123203221 - 2²⁶ = 10321056094357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10321123263221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5160561601610 + 5160561601611.

It is an arithmetic number, because the mean of its divisors is an integer number (5160561601611).

Almost surely, 2^{10321123203221} is an apocalyptic number.

It is an amenable number.

10321123203221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10321123203221 is an equidigital number, since it uses as much as digits as its factorization.

10321123203221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 10321123203221 its reverse (12230232112301), we get a palindrome (22551355315522).

The spelling of 10321123203221 in words is "ten trillion, three hundred twenty-one billion, one hundred twenty-three million, two hundred three thousand, two hundred twenty-one".