1222115 has 4 divisors (see below), whose sum is σ = 1466544. Its totient is φ = 977688.

The previous prime is 1222097. The next prime is 1222129. The reversal of 1222115 is 5112221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5112221 = 53 ⋅96457.

It is a cyclic number.

It is not a de Polignac number, because 1222115 - 2¹⁴ = 1205731 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 1222115.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 122207 + ... + 122216.

It is an arithmetic number, because the mean of its divisors is an integer number (366636).

2^1222115 is an apocalyptic number.

1222115 is a deficient number, since it is larger than the sum of its proper divisors (244429).

1222115 is an equidigital number, since it uses as much as digits as its factorization.

1222115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244428.

The product of its digits is 40, while the sum is 14.

The square root of 1222115 is about 1105.4931026470. The cubic root of 1222115 is about 106.9146843724.

Adding to 1222115 its reverse (5112221), we get a palindrome (6334336).

It can be divided in two parts, 12221 and 15, that multiplied together give a triangular number (183315 = T₆₀₅).

The spelling of 1222115 in words is "one million, two hundred twenty-two thousand, one hundred fifteen".