112121200122221 has 2 divisors, whose sum is σ = 112121200122222. Its totient is φ = 112121200122220.

The previous prime is 112121200122167. The next prime is 112121200122227. The reversal of 112121200122221 is 122221002121211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97628034876100 + 14493165246121 = 9880690^2 + 3806989^2 .

It is a cyclic number.

It is not a de Polignac number, because 112121200122221 - 2³⁴ = 112104020253037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 112121200122193 and 112121200122202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112121200122227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56060600061110 + 56060600061111.

It is an arithmetic number, because the mean of its divisors is an integer number (56060600061111).

Almost surely, 2^{112121200122221} is an apocalyptic number.

It is an amenable number.

112121200122221 is a deficient number, since it is larger than the sum of its proper divisors (1).

112121200122221 is an equidigital number, since it uses as much as digits as its factorization.

112121200122221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 112121200122221 its reverse (122221002121211), we get a palindrome (234342202243432).

The spelling of 112121200122221 in words is "one hundred twelve trillion, one hundred twenty-one billion, two hundred million, one hundred twenty-two thousand, two hundred twenty-one".