112000001221 has 2 divisors, whose sum is σ = 112000001222. Its totient is φ = 112000001220.

The previous prime is 112000001219. The next prime is 112000001237. The reversal of 112000001221 is 122100000211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95759302500 + 16240698721 = 309450^2 + 127439^2 .

It is a cyclic number.

It is not a de Polignac number, because 112000001221 - 2¹ = 112000001219 is a prime.

Together with 112000001219, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 112000001198 and 112000001207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112000001291) 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, 56000000610 + 56000000611.

It is an arithmetic number, because the mean of its divisors is an integer number (56000000611).

Almost surely, 2^112000001221 is an apocalyptic number.

It is an amenable number.

112000001221 is a deficient number, since it is larger than the sum of its proper divisors (1).

112000001221 is an equidigital number, since it uses as much as digits as its factorization.

112000001221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 112000001221 its reverse (122100000211), we get a palindrome (234100001432).

The spelling of 112000001221 in words is "one hundred twelve billion, one thousand, two hundred twenty-one".