112861721012 has 6 divisors (see below), whose sum is σ = 197508011778. Its totient is φ = 56430860504.

The previous prime is 112861720999. The next prime is 112861721017. The reversal of 112861721012 is 210127168211.

It can be written as a sum of positive squares in only one way, i.e., 96662540836 + 16199180176 = 310906^2 + 127276^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 112861721012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112861721017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14107715123 + ... + 14107715130.

It is an arithmetic number, because the mean of its divisors is an integer number (32918001963).

Almost surely, 2^112861721012 is an apocalyptic number.

It is an amenable number.

112861721012 is a deficient number, since it is larger than the sum of its proper divisors (84646290766).

112861721012 is a wasteful number, since it uses less digits than its factorization.

112861721012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28215430257 (or 28215430255 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 32.

Adding to 112861721012 its reverse (210127168211), we get a palindrome (322988889223).

The spelling of 112861721012 in words is "one hundred twelve billion, eight hundred sixty-one million, seven hundred twenty-one thousand, twelve".