1222505712 has 30 divisors (see below), whose sum is σ = 3421318472. Its totient is φ = 407501856.

The previous prime is 1222505707. The next prime is 1222505723. The reversal of 1222505712 is 2175052221.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 4244668 + ... + 4244955.

Almost surely, 2^1222505712 is an apocalyptic number.

1222505712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222505712 is an abundant number, since it is smaller than the sum of its proper divisors (2198812760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222505712 is a wasteful number, since it uses less digits than its factorization.

1222505712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8489637 (or 8489628 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 1222505712 is about 34964.3491573917. The cubic root of 1222505712 is about 1069.2607675350.

Adding to 1222505712 its reverse (2175052221), we get a palindrome (3397557933).

The spelling of 1222505712 in words is "one billion, two hundred twenty-two million, five hundred five thousand, seven hundred twelve".