10320220023721 has 2 divisors, whose sum is σ = 10320220023722. Its totient is φ = 10320220023720.

The previous prime is 10320220023709. The next prime is 10320220023829. The reversal of 10320220023721 is 12732002202301.

10320220023721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7816749264025 + 2503470759696 = 2795845^2 + 1582236^2 .

It is a cyclic number.

It is not a de Polignac number, because 10320220023721 - 2⁹ = 10320220023209 is a prime.

It is not a weakly prime, because it can be changed into another prime (10320220123721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5160110011860 + 5160110011861.

It is an arithmetic number, because the mean of its divisors is an integer number (5160110011861).

Almost surely, 2^{10320220023721} is an apocalyptic number.

It is an amenable number.

10320220023721 is a deficient number, since it is larger than the sum of its proper divisors (1).

10320220023721 is an equidigital number, since it uses as much as digits as its factorization.

10320220023721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The spelling of 10320220023721 in words is "ten trillion, three hundred twenty billion, two hundred twenty million, twenty-three thousand, seven hundred twenty-one".