1222006517 has 16 divisors (see below), whose sum is σ = 1266812400. Its totient is φ = 1178012160.

The previous prime is 1222006483. The next prime is 1222006547. The reversal of 1222006517 is 7156002221.

It can be written as a sum of positive squares in 8 ways, for example, as 9991921 + 1212014596 = 3161^2 + 34814^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222006517 - 2¹⁸ = 1221744373 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 (1222006547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1473659 + ... + 1474487.

It is an arithmetic number, because the mean of its divisors is an integer number (79175775).

Almost surely, 2^1222006517 is an apocalyptic number.

It is an amenable number.

1222006517 is a deficient number, since it is larger than the sum of its proper divisors (44805883).

1222006517 is a wasteful number, since it uses less digits than its factorization.

1222006517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1222006517 is about 34957.2097999826. The cubic root of 1222006517 is about 1069.1152079430.

Adding to 1222006517 its reverse (7156002221), we get a palindrome (8378008738).

The spelling of 1222006517 in words is "one billion, two hundred twenty-two million, six thousand, five hundred seventeen".