128101011001 has 2 divisors, whose sum is σ = 128101011002. Its totient is φ = 128101011000.

The previous prime is 128101010993. The next prime is 128101011007. The reversal of 128101011001 is 100110101821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127159994025 + 941016976 = 356595^2 + 30676^2 .

It is a cyclic number.

It is not a de Polignac number, because 128101011001 - 2³ = 128101010993 is a prime.

It is not a weakly prime, because it can be changed into another prime (128101011007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64050505500 + 64050505501.

It is an arithmetic number, because the mean of its divisors is an integer number (64050505501).

Almost surely, 2^128101011001 is an apocalyptic number.

It is an amenable number.

128101011001 is a deficient number, since it is larger than the sum of its proper divisors (1).

128101011001 is an equidigital number, since it uses as much as digits as its factorization.

128101011001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 128101011001 its reverse (100110101821), we get a palindrome (228211112822).

The spelling of 128101011001 in words is "one hundred twenty-eight billion, one hundred one million, eleven thousand, one".