10320121130021 has 2 divisors, whose sum is σ = 10320121130022. Its totient is φ = 10320121130020.

The previous prime is 10320121129949. The next prime is 10320121130101. The reversal of 10320121130021 is 12003112102301.

10320121130021 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., 10256076705121 + 64044424900 = 3202511^2 + 253070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10320121130021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10320121130321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5160060565010 + 5160060565011.

It is an arithmetic number, because the mean of its divisors is an integer number (5160060565011).

Almost surely, 2^{10320121130021} is an apocalyptic number.

It is an amenable number.

10320121130021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10320121130021 is an equidigital number, since it uses as much as digits as its factorization.

10320121130021 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 17.

Adding to 10320121130021 its reverse (12003112102301), we get a palindrome (22323233232322).

The spelling of 10320121130021 in words is "ten trillion, three hundred twenty billion, one hundred twenty-one million, one hundred thirty thousand, twenty-one".