2222000123221 has 2 divisors, whose sum is σ = 2222000123222. Its totient is φ = 2222000123220.

The previous prime is 2222000123209. The next prime is 2222000123243. The reversal of 2222000123221 is 1223210002222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1270097444196 + 951902679025 = 1126986^2 + 975655^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222000123221 - 2¹⁹ = 2221999598933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2222000123521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111000061610 + 1111000061611.

It is an arithmetic number, because the mean of its divisors is an integer number (1111000061611).

Almost surely, 2^{2222000123221} is an apocalyptic number.

It is an amenable number.

2222000123221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222000123221 is an equidigital number, since it uses as much as digits as its factorization.

2222000123221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 2222000123221 its reverse (1223210002222), we get a palindrome (3445210125443).

The spelling of 2222000123221 in words is "two trillion, two hundred twenty-two billion, one hundred twenty-three thousand, two hundred twenty-one".