222112120200221 has 2 divisors, whose sum is σ = 222112120200222. Its totient is φ = 222112120200220.

The previous prime is 222112120200193. The next prime is 222112120200241. The reversal of 222112120200221 is 122002021211222.

It is an a-pointer prime, because the next prime (222112120200241) can be obtained adding 222112120200221 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214479686265625 + 7632433934596 = 14645125^2 + 2762686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222112120200221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222112120200193 and 222112120200202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222112120200241) 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, 111056060100110 + 111056060100111.

It is an arithmetic number, because the mean of its divisors is an integer number (111056060100111).

Almost surely, 2^{222112120200221} is an apocalyptic number.

It is an amenable number.

222112120200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

222112120200221 is an equidigital number, since it uses as much as digits as its factorization.

222112120200221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222112120200221 its reverse (122002021211222), we get a palindrome (344114141411443).

The spelling of 222112120200221 in words is "two hundred twenty-two trillion, one hundred twelve billion, one hundred twenty million, two hundred thousand, two hundred twenty-one".