1223115 has 16 divisors (see below), whose sum is σ = 1985568. Its totient is φ = 642816.

The previous prime is 1223093. The next prime is 1223119. The reversal of 1223115 is 5113221.

It is not a de Polignac number, because 1223115 - 2⁵ = 1223083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 1223094 and 1223103.

It is not an unprimeable number, because it can be changed into a prime (1223119) 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 15 ways as a sum of consecutive naturals, for example, 537 + ... + 1653.

It is an arithmetic number, because the mean of its divisors is an integer number (124098).

2^1223115 is an apocalyptic number.

1223115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1223115 is a deficient number, since it is larger than the sum of its proper divisors (762453).

1223115 is a wasteful number, since it uses less digits than its factorization.

1223115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198.

The product of its digits is 60, while the sum is 15.

The square root of 1223115 is about 1105.9452970197. The cubic root of 1223115 is about 106.9438375308.

Adding to 1223115 its reverse (5113221), we get a palindrome (6336336).

It can be divided in two parts, 12231 and 15, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 1223115 in words is "one million, two hundred twenty-three thousand, one hundred fifteen".