210002012222161 has 2 divisors, whose sum is σ = 210002012222162. Its totient is φ = 210002012222160.

The previous prime is 210002012222153. The next prime is 210002012222203. The reversal of 210002012222161 is 161222210200012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203499925315600 + 6502086906561 = 14265340^2 + 2549919^2 .

It is a cyclic number.

It is not a de Polignac number, because 210002012222161 - 2³ = 210002012222153 is a prime.

It is not a weakly prime, because it can be changed into another prime (210002012222861) 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, 105001006111080 + 105001006111081.

It is an arithmetic number, because the mean of its divisors is an integer number (105001006111081).

Almost surely, 2^{210002012222161} is an apocalyptic number.

It is an amenable number.

210002012222161 is a deficient number, since it is larger than the sum of its proper divisors (1).

210002012222161 is an equidigital number, since it uses as much as digits as its factorization.

210002012222161 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 22.

Adding to 210002012222161 its reverse (161222210200012), we get a palindrome (371224222422173).

The spelling of 210002012222161 in words is "two hundred ten trillion, two billion, twelve million, two hundred twenty-two thousand, one hundred sixty-one".