112223557778 has 4 divisors (see below), whose sum is σ = 168335336670. Its totient is φ = 56111778888.

The previous prime is 112223557759. The next prime is 112223557799. The reversal of 112223557778 is 877755322211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 877755322211 = 573143 ⋅1531477.

It can be written as a sum of positive squares in only one way, i.e., 103161088969 + 9062468809 = 321187^2 + 95197^2 .

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28055889443 + ... + 28055889446.

Almost surely, 2^112223557778 is an apocalyptic number.

112223557778 is a deficient number, since it is larger than the sum of its proper divisors (56111778892).

112223557778 is an equidigital number, since it uses as much as digits as its factorization.

112223557778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56111778891.

The product of its digits is 1646400, while the sum is 50.

Adding to 112223557778 its reverse (877755322211), we get a palindrome (989978879989).

The spelling of 112223557778 in words is "one hundred twelve billion, two hundred twenty-three million, five hundred fifty-seven thousand, seven hundred seventy-eight".