1100243001 has 16 divisors (see below), whose sum is σ = 1723458240. Its totient is φ = 615520320.

The previous prime is 1100242993. The next prime is 1100243047. The reversal of 1100243001 is 1003420011.

It is a happy number.

It is not a de Polignac number, because 1100243001 - 2³ = 1100242993 is a prime.

It is a super-2 number, since 2×1100243001² = 2421069322498972002, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1100243101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1281906 + ... + 1282763.

It is an arithmetic number, because the mean of its divisors is an integer number (107716140).

Almost surely, 2^1100243001 is an apocalyptic number.

1100243001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1100243001 is a deficient number, since it is larger than the sum of its proper divisors (623215239).

1100243001 is a wasteful number, since it uses less digits than its factorization.

1100243001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564696.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1100243001 is about 33169.9110791693. The cubic root of 1100243001 is about 1032.3561235264.

Adding to 1100243001 its reverse (1003420011), we get a palindrome (2103663012).

The spelling of 1100243001 in words is "one billion, one hundred million, two hundred forty-three thousand, one".