1112223457780 has 48 divisors (see below), whose sum is σ = 2388330236880. Its totient is φ = 434919333888.

The previous prime is 1112223457759. The next prime is 1112223457781. The reversal of 1112223457780 is 877543222111.

It can be written as a sum of positive squares in 8 ways, for example, as 223641976464 + 888581481316 = 472908^2 + 942646^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112223457781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1600365 + ... + 2187604.

It is an arithmetic number, because the mean of its divisors is an integer number (49756879935).

Almost surely, 2^{1112223457780} is an apocalyptic number.

1112223457780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1112223457780 is an abundant number, since it is smaller than the sum of its proper divisors (1276106779100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1112223457780 is a wasteful number, since it uses less digits than its factorization.

1112223457780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788308 (or 3788306 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

Adding to 1112223457780 its reverse (877543222111), we get a palindrome (1989766679891).

The spelling of 1112223457780 in words is "one trillion, one hundred twelve billion, two hundred twenty-three million, four hundred fifty-seven thousand, seven hundred eighty".