11220023 has 4 divisors (see below), whose sum is σ = 11355288. Its totient is φ = 11084760.

The previous prime is 11220007. The next prime is 11220029. The reversal of 11220023 is 32002211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11220023 - 2⁴ = 11220007 is a prime.

It is a super-2 number, since 2×11220023² = 251777832241058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11219986 and 11220013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220029) 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, 67508 + ... + 67673.

It is an arithmetic number, because the mean of its divisors is an integer number (2838822).

Almost surely, 2^11220023 is an apocalyptic number.

11220023 is a deficient number, since it is larger than the sum of its proper divisors (135265).

11220023 is an equidigital number, since it uses as much as digits as its factorization.

11220023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135264.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 11220023 is about 3349.6302781053. The cubic root of 11220023 is about 223.8710394493.

Adding to 11220023 its reverse (32002211), we get a palindrome (43222234).

The spelling of 11220023 in words is "eleven million, two hundred twenty thousand, twenty-three".