11208021 has 8 divisors (see below), whose sum is σ = 16302624. Its totient is φ = 6792720.

The previous prime is 11208017. The next prime is 11208031. The reversal of 11208021 is 12080211.

11208021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11208021 - 2² = 11208017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11208031) 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 7 ways as a sum of consecutive naturals, for example, 169786 + ... + 169851.

It is an arithmetic number, because the mean of its divisors is an integer number (2037828).

Almost surely, 2^11208021 is an apocalyptic number.

11208021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11208021 is a deficient number, since it is larger than the sum of its proper divisors (5094603).

11208021 is a wasteful number, since it uses less digits than its factorization.

11208021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339651.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 11208021 is about 3347.8382577419. The cubic root of 11208021 is about 223.7911864092.

Adding to 11208021 its reverse (12080211), we get a palindrome (23288232).

It can be divided in two parts, 112080 and 21, that added together give a triangular number (112101 = T₄₇₃).

The spelling of 11208021 in words is "eleven million, two hundred eight thousand, twenty-one".