11200021 has 8 divisors (see below), whose sum is σ = 13213184. Its totient is φ = 9290160.

The previous prime is 11200019. The next prime is 11200031. The reversal of 11200021 is 12000211.

11200021 is digitally balanced in base 2, 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 a cyclic number.

It is not a de Polignac number, because 11200021 - 2¹ = 11200019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11199977 and 11200013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11200001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25590 + ... + 26023.

It is an arithmetic number, because the mean of its divisors is an integer number (1651648).

Almost surely, 2^11200021 is an apocalyptic number.

It is an amenable number.

11200021 is a deficient number, since it is larger than the sum of its proper divisors (2013163).

11200021 is an equidigital number, since it uses as much as digits as its factorization.

11200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51651.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 11200021 is about 3346.6432436099. The cubic root of 11200021 is about 223.7379282523.

Adding to 11200021 its reverse (12000211), we get a palindrome (23200232).

The spelling of 11200021 in words is "eleven million, two hundred thousand, twenty-one".