1122287 has 2 divisors, whose sum is σ = 1122288. Its totient is φ = 1122286.

The previous prime is 1122283. The next prime is 1122367. The reversal of 1122287 is 7822211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1122287 - 2² = 1122283 is a prime.

It is a super-2 number, since 2×1122287² = 2519056220738, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561143 + 561144.

It is an arithmetic number, because the mean of its divisors is an integer number (561144).

2^1122287 is an apocalyptic number.

1122287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122287 is an equidigital number, since it uses as much as digits as its factorization.

1122287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 448, while the sum is 23.

The square root of 1122287 is about 1059.3804793369. The cubic root of 1122287 is about 103.9205198956.

Adding to 1122287 its reverse (7822211), we get a palindrome (8944498).

The spelling of 1122287 in words is "one million, one hundred twenty-two thousand, two hundred eighty-seven".