1103212778 has 8 divisors (see below), whose sum is σ = 1655784768. Its totient is φ = 551284524.

The previous prime is 1103212777. The next prime is 1103212793. The reversal of 1103212778 is 8772123011.

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

It is not an unprimeable number, because it can be changed into a prime (1103212771) 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 3 ways as a sum of consecutive naturals, for example, 156626 + ... + 163517.

It is an arithmetic number, because the mean of its divisors is an integer number (206973096).

Almost surely, 2^1103212778 is an apocalyptic number.

1103212778 is a deficient number, since it is larger than the sum of its proper divisors (552571990).

1103212778 is a wasteful number, since it uses less digits than its factorization.

1103212778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321868.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 1103212778 is about 33214.6470401237. The cubic root of 1103212778 is about 1033.2841346214.

Adding to 1103212778 its reverse (8772123011), we get a palindrome (9875335789).

The spelling of 1103212778 in words is "one billion, one hundred three million, two hundred twelve thousand, seven hundred seventy-eight".