11220213 has 16 divisors (see below), whose sum is σ = 15462656. Its totient is φ = 7231680.

The previous prime is 11220211. The next prime is 11220227. The reversal of 11220213 is 31202211.

It is not a de Polignac number, because 11220213 - 2¹ = 11220211 is a prime.

It is a Duffinian number.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29895 + ... + 30267.

It is an arithmetic number, because the mean of its divisors is an integer number (966416).

Almost surely, 2^11220213 is an apocalyptic number.

It is an amenable number.

11220213 is a deficient number, since it is larger than the sum of its proper divisors (4242443).

11220213 is a wasteful number, since it uses less digits than its factorization.

11220213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 11220213 is about 3349.6586393243. The cubic root of 11220213 is about 223.8723031205.

Adding to 11220213 its reverse (31202211), we get a palindrome (42422424).

The spelling of 11220213 in words is "eleven million, two hundred twenty thousand, two hundred thirteen".