10001010001001 has 4 divisors (see below), whose sum is σ = 10001306985600. Its totient is φ = 10000713016404.

The previous prime is 10001010000973. The next prime is 10001010001027. The reversal of 10001010001001 is 10010001010001.

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.

It is a cyclic number.

It is not a de Polignac number, because 10001010001001 - 2¹⁴ = 10001009984617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10001010001091) 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, 148441781 + ... + 148509138.

It is an arithmetic number, because the mean of its divisors is an integer number (2500326746400).

Almost surely, 2^{10001010001001} is an apocalyptic number.

It is an amenable number.

10001010001001 is a deficient number, since it is larger than the sum of its proper divisors (296984599).

10001010001001 is an equidigital number, since it uses as much as digits as its factorization.

10001010001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296984598.

The product of its (nonzero) digits is 1, while the sum is 5.

Adding to 10001010001001 its reverse (10010001010001), we get a palindrome (20011011011002).

The spelling of 10001010001001 in words is "ten trillion, one billion, ten million, one thousand, one".