1100021100111 has 24 divisors (see below), whose sum is σ = 1633139655680. Its totient is φ = 712969045056.

The previous prime is 1100021100109. The next prime is 1100021100169. The reversal of 1100021100111 is 1110011200011.

It is not a de Polignac number, because 1100021100111 - 2¹ = 1100021100109 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100021100093 and 1100021100102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100021100181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 865480 + ... + 1717293.

Almost surely, 2^{1100021100111} is an apocalyptic number.

1100021100111 is a deficient number, since it is larger than the sum of its proper divisors (533118555569).

1100021100111 is a wasteful number, since it uses less digits than its factorization.

1100021100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2584095 (or 2584092 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1100021100111 its reverse (1110011200011), we get a palindrome (2210032300122).

The spelling of 1100021100111 in words is "one trillion, one hundred billion, twenty-one million, one hundred thousand, one hundred eleven".