1222887 has 16 divisors (see below), whose sum is σ = 1751040. Its totient is φ = 757152.

The previous prime is 1222853. The next prime is 1222889. The reversal of 1222887 is 7882221.

It is a happy number.

It is not a de Polignac number, because 1222887 - 2¹⁰ = 1221863 is a prime.

It is a super-2 number, since 2×1222887² = 2990905229538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222889) 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, 2314 + ... + 2792.

It is an arithmetic number, because the mean of its divisors is an integer number (109440).

2^1222887 is an apocalyptic number.

1222887 is a deficient number, since it is larger than the sum of its proper divisors (528153).

1222887 is a wasteful number, since it uses less digits than its factorization.

1222887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542.

The product of its digits is 3584, while the sum is 30.

The square root of 1222887 is about 1105.8422129762. The cubic root of 1222887 is about 106.9371920096.

The spelling of 1222887 in words is "one million, two hundred twenty-two thousand, eight hundred eighty-seven".