11001200001 has 64 divisors (see below), whose sum is σ = 16621602816. Its totient is φ = 6415718400.

The previous prime is 11001199999. The next prime is 11001200011. The reversal of 11001200001 is 10000210011.

It is not a de Polignac number, because 11001200001 - 2¹ = 11001199999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11001200011) 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 63 ways as a sum of consecutive naturals, for example, 20111610 + ... + 20112156.

It is an arithmetic number, because the mean of its divisors is an integer number (259712544).

Almost surely, 2^11001200001 is an apocalyptic number.

11001200001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11001200001 is a deficient number, since it is larger than the sum of its proper divisors (5620402815).

11001200001 is a wasteful number, since it uses less digits than its factorization.

11001200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822.

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 11001200001 its reverse (10000210011), we get a palindrome (21001410012).

The spelling of 11001200001 in words is "eleven billion, one million, two hundred thousand, one".