11220201 has 20 divisors (see below), whose sum is σ = 17005824. Its totient is φ = 7371000.

The previous prime is 11220199. The next prime is 11220211. The reversal of 11220201 is 10202211.

It is not a de Polignac number, because 11220201 - 2¹ = 11220199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220211) 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 19 ways as a sum of consecutive naturals, for example, 4776 + ... + 6726.

Almost surely, 2^11220201 is an apocalyptic number.

It is an amenable number.

11220201 is a deficient number, since it is larger than the sum of its proper divisors (5785623).

11220201 is an equidigital number, since it uses as much as digits as its factorization.

11220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034 (or 2025 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 11220201 is about 3349.6568480965. The cubic root of 11220201 is about 223.8722233101.

Adding to 11220201 its reverse (10202211), we get a palindrome (21422412).

The spelling of 11220201 in words is "eleven million, two hundred twenty thousand, two hundred one".