10128289021 has 2 divisors, whose sum is σ = 10128289022. Its totient is φ = 10128289020.

The previous prime is 10128288983. The next prime is 10128289033. The reversal of 10128289021 is 12098282101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5815740121 + 4312548900 = 76261^2 + 65670^2 .

It is a cyclic number.

It is not a de Polignac number, because 10128289021 - 2⁷ = 10128288893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10128289051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5064144510 + 5064144511.

It is an arithmetic number, because the mean of its divisors is an integer number (5064144511).

Almost surely, 2^10128289021 is an apocalyptic number.

It is an amenable number.

10128289021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10128289021 is an equidigital number, since it uses as much as digits as its factorization.

10128289021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 34.

The spelling of 10128289021 in words is "ten billion, one hundred twenty-eight million, two hundred eighty-nine thousand, twenty-one".