11220445 has 8 divisors (see below), whose sum is σ = 13555800. Its totient is φ = 8915520.

The previous prime is 11220427. The next prime is 11220457. The reversal of 11220445 is 54402211.

It can be written as a sum of positive squares in 4 ways, for example, as 683929 + 10536516 = 827^2 + 3246^2 .

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

It is not a de Polignac number, because 11220445 - 2⁹ = 11219933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6786 + ... + 8275.

It is an arithmetic number, because the mean of its divisors is an integer number (1694475).

Almost surely, 2^11220445 is an apocalyptic number.

It is an amenable number.

11220445 is a deficient number, since it is larger than the sum of its proper divisors (2335355).

11220445 is a wasteful number, since it uses less digits than its factorization.

11220445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15215.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 11220445 is about 3349.6932695398. The cubic root of 11220445 is about 223.8738461101.

Adding to 11220445 its reverse (54402211), we get a palindrome (65622656).

The spelling of 11220445 in words is "eleven million, two hundred twenty thousand, four hundred forty-five".