10123020203321 has 2 divisors, whose sum is σ = 10123020203322. Its totient is φ = 10123020203320.

The previous prime is 10123020203311. The next prime is 10123020203449. The reversal of 10123020203321 is 12330202032101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9101685610000 + 1021334593321 = 3016900^2 + 1010611^2 .

It is an emirp because it is prime and its reverse (12330202032101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10123020203321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10123020203293 and 10123020203302.

It is not a weakly prime, because it can be changed into another prime (10123020203311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5061510101660 + 5061510101661.

It is an arithmetic number, because the mean of its divisors is an integer number (5061510101661).

Almost surely, 2^{10123020203321} is an apocalyptic number.

It is an amenable number.

10123020203321 is a deficient number, since it is larger than the sum of its proper divisors (1).

10123020203321 is an equidigital number, since it uses as much as digits as its factorization.

10123020203321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 10123020203321 its reverse (12330202032101), we get a palindrome (22453222235422).

The spelling of 10123020203321 in words is "ten trillion, one hundred twenty-three billion, twenty million, two hundred three thousand, three hundred twenty-one".