1222055 has 4 divisors (see below), whose sum is σ = 1466472. Its totient is φ = 977640.

The previous prime is 1222049. The next prime is 1222057. The reversal of 1222055 is 5502221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1222055 - 2¹⁸ = 959911 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 (1222057) 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 3 ways as a sum of consecutive naturals, for example, 122201 + ... + 122210.

It is an arithmetic number, because the mean of its divisors is an integer number (366618).

2^1222055 is an apocalyptic number.

1222055 is a deficient number, since it is larger than the sum of its proper divisors (244417).

1222055 is an equidigital number, since it uses as much as digits as its factorization.

1222055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244416.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 1222055 is about 1105.4659651025. The cubic root of 1222055 is about 106.9129346773.

Adding to 1222055 its reverse (5502221), we get a palindrome (6724276).

The spelling of 1222055 in words is "one million, two hundred twenty-two thousand, fifty-five".