11221023 has 8 divisors (see below), whose sum is σ = 16321536. Its totient is φ = 6800600.

The previous prime is 11221009. The next prime is 11221043. The reversal of 11221023 is 32012211.

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

It is a cyclic number.

It is not a de Polignac number, because 11221023 - 2⁵ = 11220991 is a prime.

It is a super-2 number, since 2×11221023² = 251822714333058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221043) 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 7 ways as a sum of consecutive naturals, for example, 169983 + ... + 170048.

It is an arithmetic number, because the mean of its divisors is an integer number (2040192).

Almost surely, 2^11221023 is an apocalyptic number.

11221023 is a deficient number, since it is larger than the sum of its proper divisors (5100513).

11221023 is a wasteful number, since it uses less digits than its factorization.

11221023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340045.

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

The square root of 11221023 is about 3349.7795449850. The cubic root of 11221023 is about 223.8776901900.

Adding to 11221023 its reverse (32012211), we get a palindrome (43233234).

It can be divided in two parts, 1122 and 1023, that added together give a triangular number (2145 = T₆₅).

The spelling of 11221023 in words is "eleven million, two hundred twenty-one thousand, twenty-three".