10202320081 has 2 divisors, whose sum is σ = 10202320082. Its totient is φ = 10202320080.

The previous prime is 10202319997. The next prime is 10202320099. The reversal of 10202320081 is 18002320201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7764429456 + 2437890625 = 88116^2 + 49375^2 .

It is a cyclic number.

It is not a de Polignac number, because 10202320081 - 2²⁷ = 10068102353 is a prime.

It is a super-2 number, since 2×10202320081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10202320181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101160040 + 5101160041.

It is an arithmetic number, because the mean of its divisors is an integer number (5101160041).

Almost surely, 2^10202320081 is an apocalyptic number.

It is an amenable number.

10202320081 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202320081 is an equidigital number, since it uses as much as digits as its factorization.

10202320081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 10202320081 its reverse (18002320201), we get a palindrome (28204640282).

The spelling of 10202320081 in words is "ten billion, two hundred two million, three hundred twenty thousand, eighty-one".