11021923 has 8 divisors (see below), whose sum is σ = 12280320. Its totient is φ = 9806280.

The previous prime is 11021917. The next prime is 11021929. The reversal of 11021923 is 32912011.

It is an interprime number because it is at equal distance from previous prime (11021917) and next prime (11021929).

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

It is not a de Polignac number, because 11021923 - 2⁵ = 11021891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11021923.

It is not an unprimeable number, because it can be changed into a prime (11021929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10143 + ... + 11176.

It is an arithmetic number, because the mean of its divisors is an integer number (1535040).

Almost surely, 2^11021923 is an apocalyptic number.

11021923 is a deficient number, since it is larger than the sum of its proper divisors (1258397).

11021923 is a wasteful number, since it uses less digits than its factorization.

11021923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21377.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 11021923 is about 3319.9281618734. The cubic root of 11021923 is about 222.5456574233.

Adding to 11021923 its reverse (32912011), we get a palindrome (43933934).

It can be divided in two parts, 1102 and 1923, that added together give a square (3025 = 55²).

The spelling of 11021923 in words is "eleven million, twenty-one thousand, nine hundred twenty-three".