1101200001 has 16 divisors (see below), whose sum is σ = 1608139008. Its totient is φ = 664730000.

The previous prime is 1101199997. The next prime is 1101200033. The reversal of 1101200001 is 1000021011.

It is not a de Polignac number, because 1101200001 - 2² = 1101199997 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1101200101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58191 + ... + 74756.

It is an arithmetic number, because the mean of its divisors is an integer number (100508688).

Almost surely, 2^1101200001 is an apocalyptic number.

1101200001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101200001 is a deficient number, since it is larger than the sum of its proper divisors (506939007).

1101200001 is a wasteful number, since it uses less digits than its factorization.

1101200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133212.

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

The square root of 1101200001 is about 33184.3336681634. Note that the first 3 decimals coincide. The cubic root of 1101200001 is about 1032.6553539392.

Adding to 1101200001 its reverse (1000021011), we get a palindrome (2101221012).

It can be divided in two parts, 1101 and 200001, that added together give a palindrome (201102).

The spelling of 1101200001 in words is "one billion, one hundred one million, two hundred thousand, one".