22021104 has 40 divisors (see below), whose sum is σ = 65015680. Its totient is φ = 6291648.

The previous prime is 22021093. The next prime is 22021123. The reversal of 22021104 is 40112022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 22021104.

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, 32434 + ... + 33105.

It is an arithmetic number, because the mean of its divisors is an integer number (1625392).

Almost surely, 2^22021104 is an apocalyptic number.

22021104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22021104 is an abundant number, since it is smaller than the sum of its proper divisors (42994576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22021104 is a wasteful number, since it uses less digits than its factorization.

22021104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65557 (or 65551 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 22021104 is about 4692.6649145235. The cubic root of 22021104 is about 280.2935017617.

Adding to 22021104 its reverse (40112022), we get a palindrome (62133126).

The spelling of 22021104 in words is "twenty-two million, twenty-one thousand, one hundred four".