112231121300021 has 4 divisors (see below), whose sum is σ = 113224317063852. Its totient is φ = 111237925536192.

The previous prime is 112231121300017. The next prime is 112231121300027. The reversal of 112231121300021 is 120003121132211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19515675699025 + 92715445600996 = 4417655^2 + 9628886^2 .

It is a cyclic number.

It is not a de Polignac number, because 112231121300021 - 2² = 112231121300017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112231121299966 and 112231121300002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112231121300027) 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, 496597881746 + ... + 496597881971.

It is an arithmetic number, because the mean of its divisors is an integer number (28306079265963).

Almost surely, 2^{112231121300021} is an apocalyptic number.

It is an amenable number.

112231121300021 is a deficient number, since it is larger than the sum of its proper divisors (993195763831).

112231121300021 is an equidigital number, since it uses as much as digits as its factorization.

112231121300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993195763830.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 112231121300021 its reverse (120003121132211), we get a palindrome (232234242432232).

The spelling of 112231121300021 in words is "one hundred twelve trillion, two hundred thirty-one billion, one hundred twenty-one million, three hundred thousand, twenty-one".