112861721013 has 4 divisors (see below), whose sum is σ = 150482294688. Its totient is φ = 75241147340.

The previous prime is 112861720999. The next prime is 112861721017. The reversal of 112861721013 is 310127168211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 112861721013 - 2⁸ = 112861720757 is a prime.

It is a super-3 number, since 3×112861721013³ (a number of 34 digits) contains 333 as substring.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18810286833 + ... + 18810286838.

It is an arithmetic number, because the mean of its divisors is an integer number (37620573672).

Almost surely, 2^112861721013 is an apocalyptic number.

It is an amenable number.

112861721013 is a deficient number, since it is larger than the sum of its proper divisors (37620573675).

112861721013 is an equidigital number, since it uses as much as digits as its factorization.

112861721013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37620573674.

The product of its (nonzero) digits is 4032, while the sum is 33.

Adding to 112861721013 its reverse (310127168211), we get a palindrome (422988889224).

The spelling of 112861721013 in words is "one hundred twelve billion, eight hundred sixty-one million, seven hundred twenty-one thousand, thirteen".