1112223456778 has 32 divisors (see below), whose sum is σ = 1922728034304. Its totient is φ = 472656470832.

The previous prime is 1112223456763. The next prime is 1112223456793. The reversal of 1112223456778 is 8776543222111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1112223456763) and next prime (1112223456793).

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3114625 + ... + 3453307.

It is an arithmetic number, because the mean of its divisors is an integer number (60085251072).

Almost surely, 2^{1112223456778} is an apocalyptic number.

1112223456778 is a deficient number, since it is larger than the sum of its proper divisors (810504577526).

1112223456778 is a wasteful number, since it uses less digits than its factorization.

1112223456778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340666.

The product of its digits is 1128960, while the sum is 49.

Adding to 1112223456778 its reverse (8776543222111), we get a palindrome (9888766678889).

The spelling of 1112223456778 in words is "one trillion, one hundred twelve billion, two hundred twenty-three million, four hundred fifty-six thousand, seven hundred seventy-eight".