11203921 has 8 divisors (see below), whose sum is σ = 11833920. Its totient is φ = 10585872.

The previous prime is 11203919. The next prime is 11203949. The reversal of 11203921 is 12930211.

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

It is a cyclic number.

It is not a de Polignac number, because 11203921 - 2¹ = 11203919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11203961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1026 + ... + 4843.

It is an arithmetic number, because the mean of its divisors is an integer number (1479240).

Almost surely, 2^11203921 is an apocalyptic number.

It is an amenable number.

11203921 is a deficient number, since it is larger than the sum of its proper divisors (629999).

11203921 is an equidigital number, since it uses as much as digits as its factorization.

11203921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5975.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 11203921 is about 3347.2258662958. The cubic root of 11203921 is about 223.7638947708.

It can be divided in two parts, 1120 and 3921, that added together give a square (5041 = 71²).

The spelling of 11203921 in words is "eleven million, two hundred three thousand, nine hundred twenty-one".