1301265001 has 4 divisors (see below), whose sum is σ = 1323320400. Its totient is φ = 1279209604.

The previous prime is 1301264981. The next prime is 1301265013. The reversal of 1301265001 is 1005621031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1005621031 = 2131 ⋅471901.

It is a cyclic number.

It is not a de Polignac number, because 1301265001 - 2⁷ = 1301264873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1301265001.

It is not an unprimeable number, because it can be changed into a prime (1301265401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11027611 + ... + 11027728.

It is an arithmetic number, because the mean of its divisors is an integer number (330830100).

Almost surely, 2^1301265001 is an apocalyptic number.

It is an amenable number.

1301265001 is a deficient number, since it is larger than the sum of its proper divisors (22055399).

1301265001 is an equidigital number, since it uses as much as digits as its factorization.

1301265001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22055398.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1301265001 is about 36073.0508967567. The cubic root of 1301265001 is about 1091.7467716549.

Adding to 1301265001 its reverse (1005621031), we get a palindrome (2306886032).

The spelling of 1301265001 in words is "one billion, three hundred one million, two hundred sixty-five thousand, one".