11210221 has 8 divisors (see below), whose sum is σ = 12268224. Its totient is φ = 10158720.

The previous prime is 11210207. The next prime is 11210257. The reversal of 11210221 is 12201211.

11210221 = T₅₄ + T₅₅ + ... + T₄₀₆.

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

It is not a de Polignac number, because 11210221 - 2¹¹ = 11208173 is a prime.

It is a super-3 number, since 3×11210221³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11210198 and 11210207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11210201) 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, 2440 + ... + 5326.

It is an arithmetic number, because the mean of its divisors is an integer number (1533528).

Almost surely, 2^11210221 is an apocalyptic number.

11210221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11210221 is a deficient number, since it is larger than the sum of its proper divisors (1058003).

11210221 is a wasteful number, since it uses less digits than its factorization.

11210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 11210221 is about 3348.1668118539. The cubic root of 11210221 is about 223.8058279593.

Adding to 11210221 its reverse (12201211), we get a palindrome (23411432).

The spelling of 11210221 in words is "eleven million, two hundred ten thousand, two hundred twenty-one".