112221211222278 has 24 divisors (see below), whose sum is σ = 243148614524400. Its totient is φ = 37406661657264.

The previous prime is 112221211222273. The next prime is 112221211222279. The reversal of 112221211222278 is 872222112122211.

112221211222278 is a `hidden beast` number, since 1 + 122 + 21 + 21 + 1 + 222 + 278 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112221211222273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32367193 + ... + 35666196.

It is an arithmetic number, because the mean of its divisors is an integer number (10131192271850).

Almost surely, 2^{112221211222278} is an apocalyptic number.

112221211222278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

112221211222278 is an abundant number, since it is smaller than the sum of its proper divisors (130927403302122).

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

112221211222278 is a wasteful number, since it uses less digits than its factorization.

112221211222278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68125036 (or 68125033 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

Adding to 112221211222278 its reverse (872222112122211), we get a palindrome (984443323344489).

The spelling of 112221211222278 in words is "one hundred twelve trillion, two hundred twenty-one billion, two hundred eleven million, two hundred twenty-two thousand, two hundred seventy-eight".