112112111120221 has 4 divisors (see below), whose sum is σ = 112731515049244. Its totient is φ = 111492707191200.

The previous prime is 112112111120173. The next prime is 112112111120287. The reversal of 112112111120221 is 122021111211211.

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 3533418708121 + 108578692412100 = 1879739^2 + 10420110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112112111120221 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 (112112111160221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309701964240 + ... + 309701964601.

It is an arithmetic number, because the mean of its divisors is an integer number (28182878762311).

Almost surely, 2^{112112111120221} is an apocalyptic number.

It is an amenable number.

112112111120221 is a deficient number, since it is larger than the sum of its proper divisors (619403929023).

112112111120221 is an equidigital number, since it uses as much as digits as its factorization.

112112111120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619403929022.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 112112111120221 its reverse (122021111211211), we get a palindrome (234133222331432).

The spelling of 112112111120221 in words is "one hundred twelve trillion, one hundred twelve billion, one hundred eleven million, one hundred twenty thousand, two hundred twenty-one".