11006001001 has 4 divisors (see below), whose sum is σ = 11156768212. Its totient is φ = 10855233792.

The previous prime is 11006000989. The next prime is 11006001011. The reversal of 11006001001 is 10010060011.

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 5230760976 + 5775240025 = 72324^2 + 75995^2 .

It is a cyclic number.

It is not a de Polignac number, because 11006001001 - 2²¹ = 11003903849 is a prime.

It is a super-2 number, since 2×11006001001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11006001011) 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, 75383496 + ... + 75383641.

It is an arithmetic number, because the mean of its divisors is an integer number (2789192053).

Almost surely, 2^11006001001 is an apocalyptic number.

It is an amenable number.

11006001001 is a deficient number, since it is larger than the sum of its proper divisors (150767211).

11006001001 is an equidigital number, since it uses as much as digits as its factorization.

11006001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150767210.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 11006001001 its reverse (10010060011), we get a palindrome (21016061012).

The spelling of 11006001001 in words is "eleven billion, six million, one thousand, one".