222000110100221 has 2 divisors, whose sum is σ = 222000110100222. Its totient is φ = 222000110100220.

The previous prime is 222000110100203. The next prime is 222000110100247. The reversal of 222000110100221 is 122001011000222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126427783368121 + 95572326732100 = 11244011^2 + 9776110^2 .

It is a cyclic number.

It is not a de Polignac number, because 222000110100221 - 2⁶ = 222000110100157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222000110100196 and 222000110100205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222000110400221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111000055050110 + 111000055050111.

It is an arithmetic number, because the mean of its divisors is an integer number (111000055050111).

Almost surely, 2^{222000110100221} is an apocalyptic number.

It is an amenable number.

222000110100221 is a deficient number, since it is larger than the sum of its proper divisors (1).

222000110100221 is an equidigital number, since it uses as much as digits as its factorization.

222000110100221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 222000110100221 its reverse (122001011000222), we get a palindrome (344001121100443).

Subtracting from 222000110100221 its reverse (122001011000222), we obtain a palindrome (99999099099999).

The spelling of 222000110100221 in words is "two hundred twenty-two trillion, one hundred ten million, one hundred thousand, two hundred twenty-one".