11220646 has 8 divisors (see below), whose sum is σ = 17821080. Its totient is φ = 5280288.

The previous prime is 11220641. The next prime is 11220647. The reversal of 11220646 is 64602211.

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

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220641) 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 3 ways as a sum of consecutive naturals, for example, 164976 + ... + 165043.

It is an arithmetic number, because the mean of its divisors is an integer number (2227635).

Almost surely, 2^11220646 is an apocalyptic number.

11220646 is a deficient number, since it is larger than the sum of its proper divisors (6600434).

11220646 is a wasteful number, since it uses less digits than its factorization.

11220646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330038.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 11220646 is about 3349.7232721525. The cubic root of 11220646 is about 223.8751829072.

Adding to 11220646 its reverse (64602211), we get a palindrome (75822857).

The spelling of 11220646 in words is "eleven million, two hundred twenty thousand, six hundred forty-six".