11100444021 has 24 divisors (see below), whose sum is σ = 16529160960. Its totient is φ = 7175186496.

The previous prime is 11100444007. The next prime is 11100444053. The reversal of 11100444021 is 12044400111.

It is not a de Polignac number, because 11100444021 - 2¹⁸ = 11100181877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11100443985 and 11100444003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100442021) 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, 104421 + ... + 181946.

It is an arithmetic number, because the mean of its divisors is an integer number (688715040).

Almost surely, 2^11100444021 is an apocalyptic number.

It is an amenable number.

11100444021 is a deficient number, since it is larger than the sum of its proper divisors (5428716939).

11100444021 is a wasteful number, since it uses less digits than its factorization.

11100444021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286505 (or 286502 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11100444021 its reverse (12044400111), we get a palindrome (23144844132).

The spelling of 11100444021 in words is "eleven billion, one hundred million, four hundred forty-four thousand, twenty-one".