1100222001 has 16 divisors (see below), whose sum is σ = 1645787520. Its totient is φ = 726358320.

The previous prime is 1100221979. The next prime is 1100222009. The reversal of 1100222001 is 1002220011.

It is not a de Polignac number, because 1100222001 - 2⁹ = 1100221489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1100222009) 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, 195030 + ... + 200591.

It is an arithmetic number, because the mean of its divisors is an integer number (102861720).

Almost surely, 2^1100222001 is an apocalyptic number.

It is an amenable number.

1100222001 is a deficient number, since it is larger than the sum of its proper divisors (545565519).

1100222001 is a wasteful number, since it uses less digits than its factorization.

1100222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395733 (or 395727 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1100222001 is about 33169.5945257098. The cubic root of 1100222001 is about 1032.3495553966.

Adding to 1100222001 its reverse (1002220011), we get a palindrome (2102442012).

The spelling of 1100222001 in words is "one billion, one hundred million, two hundred twenty-two thousand, one".