1223105 has 16 divisors (see below), whose sum is σ = 1634304. Its totient is φ = 872640.

The previous prime is 1223093. The next prime is 1223119. The reversal of 1223105 is 5013221.

It is a happy number.

It is not a de Polignac number, because 1223105 - 2¹⁴ = 1206721 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 1223105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1712 + ... + 2318.

It is an arithmetic number, because the mean of its divisors is an integer number (102144).

2^1223105 is an apocalyptic number.

It is an amenable number.

1223105 is a deficient number, since it is larger than the sum of its proper divisors (411199).

1223105 is a wasteful number, since it uses less digits than its factorization.

1223105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1223105 is about 1105.9407759912. The cubic root of 1223105 is about 106.9435460779.

Adding to 1223105 its reverse (5013221), we get a palindrome (6236326).

The spelling of 1223105 in words is "one million, two hundred twenty-three thousand, one hundred five".