1301128901 has 2 divisors, whose sum is σ = 1301128902. Its totient is φ = 1301128900.

The previous prime is 1301128861. The next prime is 1301128919. The reversal of 1301128901 is 1098211031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1214452801 + 86676100 = 34849^2 + 9310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1301128901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1301128921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650564450 + 650564451.

It is an arithmetic number, because the mean of its divisors is an integer number (650564451).

Almost surely, 2^1301128901 is an apocalyptic number.

It is an amenable number.

1301128901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301128901 is an equidigital number, since it uses as much as digits as its factorization.

1301128901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 1301128901 is about 36071.1643976182. The cubic root of 1301128901 is about 1091.7087082023.

Adding to 1301128901 its reverse (1098211031), we get a palindrome (2399339932).

The spelling of 1301128901 in words is "one billion, three hundred one million, one hundred twenty-eight thousand, nine hundred one".