10010091001 has 4 divisors (see below), whose sum is σ = 10254239604. Its totient is φ = 9765942400.

The previous prime is 10010090989. The next prime is 10010091041. The reversal of 10010091001 is 10019001001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1697028025 + 8313062976 = 41195^2 + 91176^2 .

It is a cyclic number.

It is not a de Polignac number, because 10010091001 - 2²³ = 10001702393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10010091041) 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, 122074240 + ... + 122074321.

It is an arithmetic number, because the mean of its divisors is an integer number (2563559901).

Almost surely, 2^10010091001 is an apocalyptic number.

It is an amenable number.

10010091001 is a deficient number, since it is larger than the sum of its proper divisors (244148603).

10010091001 is an equidigital number, since it uses as much as digits as its factorization.

10010091001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244148602.

The product of its (nonzero) digits is 9, while the sum is 13.

Adding to 10010091001 its reverse (10019001001), we get a palindrome (20029092002).

The spelling of 10010091001 in words is "ten billion, ten million, ninety-one thousand, one".