1222715747 has 8 divisors (see below), whose sum is σ = 1334653680. Its totient is φ = 1110908160.

The previous prime is 1222715737. The next prime is 1222715771. The reversal of 1222715747 is 7475172221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222715747 - 2¹⁰ = 1222714723 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222715747.

It is not an unprimeable number, because it can be changed into a prime (1222715737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12422 + ... + 50987.

It is an arithmetic number, because the mean of its divisors is an integer number (166831710).

Almost surely, 2^1222715747 is an apocalyptic number.

1222715747 is a deficient number, since it is larger than the sum of its proper divisors (111937933).

1222715747 is a wasteful number, since it uses less digits than its factorization.

1222715747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65173.

The product of its digits is 54880, while the sum is 38.

The square root of 1222715747 is about 34967.3525878068. The cubic root of 1222715747 is about 1069.3219995120.

Adding to 1222715747 its reverse (7475172221), we get a palindrome (8697887968).

The spelling of 1222715747 in words is "one billion, two hundred twenty-two million, seven hundred fifteen thousand, seven hundred forty-seven".