12801010128 has 20 divisors (see below), whose sum is σ = 33069276288. Its totient is φ = 4267003360.

The previous prime is 12801010127. The next prime is 12801010207. The reversal of 12801010128 is 82101010821.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 12801010098 and 12801010107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12801010121) 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 in 3 ways as a sum of consecutive naturals, for example, 133343808 + ... + 133343903.

Almost surely, 2^12801010128 is an apocalyptic number.

It is an amenable number.

12801010128 is an abundant number, since it is smaller than the sum of its proper divisors (20268266160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12801010128 is a wasteful number, since it uses less digits than its factorization.

12801010128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266687722 (or 266687716 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 24.

Adding to 12801010128 its reverse (82101010821), we get a palindrome (94902020949).

The spelling of 12801010128 in words is "twelve billion, eight hundred one million, ten thousand, one hundred twenty-eight".