1000900901001 has 4 divisors (see below), whose sum is σ = 1334534534672. Its totient is φ = 667267267332.

The previous prime is 1000900900999. The next prime is 1000900901053. The reversal of 1000900901001 is 1001090090001.

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 not a de Polignac number, because 1000900901001 - 2¹ = 1000900900999 is a prime.

It is a super-2 number, since 2×1000900901001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1000900901101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166816816831 + ... + 166816816836.

It is an arithmetic number, because the mean of its divisors is an integer number (333633633668).

Almost surely, 2^{1000900901001} is an apocalyptic number.

It is an amenable number.

1000900901001 is a deficient number, since it is larger than the sum of its proper divisors (333633633671).

1000900901001 is an equidigital number, since it uses as much as digits as its factorization.

1000900901001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333633633670.

The product of its (nonzero) digits is 81, while the sum is 21.

Adding to 1000900901001 its reverse (1001090090001), we get a palindrome (2001990991002).

The spelling of 1000900901001 in words is "one trillion, nine hundred million, nine hundred one thousand, one".