212222621120281 has 2 divisors, whose sum is σ = 212222621120282. Its totient is φ = 212222621120280.

The previous prime is 212222621120189. The next prime is 212222621120297. The reversal of 212222621120281 is 182021126222212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211255759929600 + 966861190681 = 14534640^2 + 983291^2 .

It is a cyclic number.

It is not a de Polignac number, because 212222621120281 - 2³⁹ = 211672865306393 is a prime.

It is a super-2 number, since 2×212222621120281² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212222621120581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106111310560140 + 106111310560141.

It is an arithmetic number, because the mean of its divisors is an integer number (106111310560141).

Almost surely, 2^{212222621120281} is an apocalyptic number.

It is an amenable number.

212222621120281 is a deficient number, since it is larger than the sum of its proper divisors (1).

212222621120281 is an equidigital number, since it uses as much as digits as its factorization.

212222621120281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 34.

Adding to 212222621120281 its reverse (182021126222212), we get a palindrome (394243747342493).

The spelling of 212222621120281 in words is "two hundred twelve trillion, two hundred twenty-two billion, six hundred twenty-one million, one hundred twenty thousand, two hundred eighty-one".