128220803207 has 16 divisors (see below), whose sum is σ = 148593622080. Its totient is φ = 108362852352.

The previous prime is 128220803129. The next prime is 128220803219. The reversal of 128220803207 is 702308022821.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 128220803207 - 2¹⁰ = 128220802183 is a prime.

It is a super-3 number, since 3×128220803207³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128220803237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1600703 + ... + 1678895.

It is an arithmetic number, because the mean of its divisors is an integer number (9287101380).

Almost surely, 2^128220803207 is an apocalyptic number.

128220803207 is a deficient number, since it is larger than the sum of its proper divisors (20372818873).

128220803207 is an equidigital number, since it uses as much as digits as its factorization.

128220803207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81482.

The product of its (nonzero) digits is 21504, while the sum is 35.

The spelling of 128220803207 in words is "one hundred twenty-eight billion, two hundred twenty million, eight hundred three thousand, two hundred seven".