112112001221021 has 4 divisors (see below), whose sum is σ = 113949902880444. Its totient is φ = 110274099561600.

The previous prime is 112112001220997. The next prime is 112112001221039. The reversal of 112112001221021 is 120122100211211.

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 27277493601796 + 84834507619225 = 5222786^2 + 9210565^2 .

It is a cyclic number.

It is not a de Polignac number, because 112112001221021 - 2³⁴ = 112094821351837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112112001221321) 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, 918950829620 + ... + 918950829741.

It is an arithmetic number, because the mean of its divisors is an integer number (28487475720111).

Almost surely, 2^{112112001221021} is an apocalyptic number.

It is an amenable number.

112112001221021 is a deficient number, since it is larger than the sum of its proper divisors (1837901659423).

112112001221021 is an equidigital number, since it uses as much as digits as its factorization.

112112001221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837901659422.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 112112001221021 its reverse (120122100211211), we get a palindrome (232234101432232).

The spelling of 112112001221021 in words is "one hundred twelve trillion, one hundred twelve billion, one million, two hundred twenty-one thousand, twenty-one".