10203020081 has 2 divisors, whose sum is σ = 10203020082. Its totient is φ = 10203020080.

The previous prime is 10203020071. The next prime is 10203020119. The reversal of 10203020081 is 18002030201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5739577600 + 4463442481 = 75760^2 + 66809^2 .

It is a cyclic number.

It is not a de Polignac number, because 10203020081 - 2¹⁴ = 10203003697 is a prime.

It is a super-2 number, since 2×10203020081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10203020071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101510040 + 5101510041.

It is an arithmetic number, because the mean of its divisors is an integer number (5101510041).

Almost surely, 2^10203020081 is an apocalyptic number.

It is an amenable number.

10203020081 is a deficient number, since it is larger than the sum of its proper divisors (1).

10203020081 is an equidigital number, since it uses as much as digits as its factorization.

10203020081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 10203020081 its reverse (18002030201), we get a palindrome (28205050282).

The spelling of 10203020081 in words is "ten billion, two hundred three million, twenty thousand, eighty-one".