1001201001271 has 2 divisors, whose sum is σ = 1001201001272. Its totient is φ = 1001201001270.

The previous prime is 1001201001217. The next prime is 1001201001329. The reversal of 1001201001271 is 1721001021001.

Together with previous prime (1001201001217) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001201001271 - 2¹⁷ = 1001200870199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001201001371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500600500635 + 500600500636.

It is an arithmetic number, because the mean of its divisors is an integer number (500600500636).

Almost surely, 2^{1001201001271} is an apocalyptic number.

1001201001271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001201001271 is an equidigital number, since it uses as much as digits as its factorization.

1001201001271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 16.

Adding to 1001201001271 its reverse (1721001021001), we get a palindrome (2722202022272).

The spelling of 1001201001271 in words is "one trillion, one billion, two hundred one million, one thousand, two hundred seventy-one".