11209373021 has 16 divisors (see below), whose sum is σ = 14143707648. Its totient is φ = 8629335600.

The previous prime is 11209373009. The next prime is 11209373027. The reversal of 11209373021 is 12037390211.

11209373021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11209373021 - 2⁶ = 11209372957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11209373027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 870575 + ... + 883356.

It is an arithmetic number, because the mean of its divisors is an integer number (883981728).

Almost surely, 2^11209373021 is an apocalyptic number.

11209373021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11209373021 is a deficient number, since it is larger than the sum of its proper divisors (2934334627).

11209373021 is a wasteful number, since it uses less digits than its factorization.

11209373021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754032.

The product of its (nonzero) digits is 2268, while the sum is 29.

The spelling of 11209373021 in words is "eleven billion, two hundred nine million, three hundred seventy-three thousand, twenty-one".