22103009 has 6 divisors (see below), whose sum is σ = 23479974. Its totient is φ = 20802560.

The previous prime is 22102987. The next prime is 22103021. The reversal of 22103009 is 90030122.

It can be written as a sum of positive squares in 3 ways, for example, as 2166784 + 19936225 = 1472^2 + 4465^2 .

It is not a de Polignac number, because 22103009 - 2¹² = 22098913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22103089) 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 5 ways as a sum of consecutive naturals, for example, 37952 + ... + 38529.

It is an arithmetic number, because the mean of its divisors is an integer number (3913329).

Almost surely, 2^22103009 is an apocalyptic number.

It is an amenable number.

22103009 is a deficient number, since it is larger than the sum of its proper divisors (1376965).

22103009 is an equidigital number, since it uses as much as digits as its factorization.

22103009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76515 (or 76498 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 22103009 is about 4701.3837324771. The cubic root of 22103009 is about 280.6405784478.

The spelling of 22103009 in words is "twenty-two million, one hundred three thousand, nine".