1100202110921 has 16 divisors (see below), whose sum is σ = 1172857190400. Its totient is φ = 1029024032400.

The previous prime is 1100202110851. The next prime is 1100202110923. The reversal of 1100202110921 is 1290112020011.

It is a de Polignac number, because none of the positive numbers 2^k-1100202110921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1100202110893 and 1100202110902.

It is not an unprimeable number, because it can be changed into a prime (1100202110923) 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 15 ways as a sum of consecutive naturals, for example, 30618956 + ... + 30654866.

It is an arithmetic number, because the mean of its divisors is an integer number (73303574400).

Almost surely, 2^{1100202110921} is an apocalyptic number.

It is an amenable number.

1100202110921 is a deficient number, since it is larger than the sum of its proper divisors (72655079479).

1100202110921 is a wasteful number, since it uses less digits than its factorization.

1100202110921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56420.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 1100202110921 its reverse (1290112020011), we get a palindrome (2390314130932).

The spelling of 1100202110921 in words is "one trillion, one hundred billion, two hundred two million, one hundred ten thousand, nine hundred twenty-one".