1122277778 has 16 divisors (see below), whose sum is σ = 1774725120. Its totient is φ = 531206016.

The previous prime is 1122277771. The next prime is 1122277787. The reversal of 1122277778 is 8777722211.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1122277771) 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, 121298 + ... + 130221.

It is an arithmetic number, because the mean of its divisors is an integer number (110920320).

Almost surely, 2^1122277778 is an apocalyptic number.

1122277778 is a deficient number, since it is larger than the sum of its proper divisors (652447342).

1122277778 is a wasteful number, since it uses less digits than its factorization.

1122277778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251641.

The product of its digits is 153664, while the sum is 44.

The square root of 1122277778 is about 33500.4145944494. The cubic root of 1122277778 is about 1039.2023525129.

Adding to 1122277778 its reverse (8777722211), we get a palindrome (9899999989).

The spelling of 1122277778 in words is "one billion, one hundred twenty-two million, two hundred seventy-seven thousand, seven hundred seventy-eight".