1222567 has 2 divisors, whose sum is σ = 1222568. Its totient is φ = 1222566.

The previous prime is 1222561. The next prime is 1222583. The reversal of 1222567 is 7652221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222567 is a prime.

It is a d-powerful number, because it can be written as 1 + 2 + 2¹³ + 2¹⁵ + 5⁷ + 6⁷ + 7⁷ .

1222567 is a lucky number.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611283 + 611284.

It is an arithmetic number, because the mean of its divisors is an integer number (611284).

2^1222567 is an apocalyptic number.

1222567 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222567 is an equidigital number, since it uses as much as digits as its factorization.

1222567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 25.

The square root of 1222567 is about 1105.6975174070. The cubic root of 1222567 is about 106.9278635688.

Adding to 1222567 its reverse (7652221), we get a palindrome (8874788).

The spelling of 1222567 in words is "one million, two hundred twenty-two thousand, five hundred sixty-seven".