1222127 has 4 divisors (see below), whose sum is σ = 1245240. Its totient is φ = 1199016.

The previous prime is 1222097. The next prime is 1222129. The reversal of 1222127 is 7212221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7212221 = 1867 ⋅3863.

It is a cyclic number.

It is not a de Polignac number, because 1222127 - 2⁶ = 1222063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11477 + ... + 11582.

It is an arithmetic number, because the mean of its divisors is an integer number (311310).

2^1222127 is an apocalyptic number.

1222127 is a deficient number, since it is larger than the sum of its proper divisors (23113).

1222127 is an equidigital number, since it uses as much as digits as its factorization.

1222127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23112.

The product of its digits is 112, while the sum is 17.

The square root of 1222127 is about 1105.4985300759. The cubic root of 1222127 is about 106.9150343046.

Adding to 1222127 its reverse (7212221), we get a palindrome (8434348).

The spelling of 1222127 in words is "one million, two hundred twenty-two thousand, one hundred twenty-seven".