112378857021 has 12 divisors (see below), whose sum is σ = 162345882972. Its totient is φ = 74909606976.

The previous prime is 112378857007. The next prime is 112378857023. The reversal of 112378857021 is 120758873211.

112378857021 is a `hidden beast` number, since 1 + 1 + 2 + 3 + 78 + 8 + 570 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 989794521 + 111389062500 = 31461^2 + 333750^2 .

It is not a de Polignac number, because 112378857021 - 2⁷ = 112378856893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112378857023) 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, 728326 + ... + 869031.

It is an arithmetic number, because the mean of its divisors is an integer number (13528823581).

Almost surely, 2^112378857021 is an apocalyptic number.

It is an amenable number.

112378857021 is a deficient number, since it is larger than the sum of its proper divisors (49967025951).

112378857021 is a wasteful number, since it uses less digits than its factorization.

112378857021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605180 (or 1605177 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 45.

The spelling of 112378857021 in words is "one hundred twelve billion, three hundred seventy-eight million, eight hundred fifty-seven thousand, twenty-one".