212211018169 has 2 divisors, whose sum is σ = 212211018170. Its totient is φ = 212211018168.

The previous prime is 212211018167. The next prime is 212211018191. The reversal of 212211018169 is 961810112212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167782809769 + 44428208400 = 409613^2 + 210780^2 .

It is a cyclic number.

It is not a de Polignac number, because 212211018169 - 2¹ = 212211018167 is a prime.

It is a super-2 number, since 2×212211018169² (a number of 23 digits) contains 22 as substring.

Together with 212211018167, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (212211018163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106105509084 + 106105509085.

It is an arithmetic number, because the mean of its divisors is an integer number (106105509085).

Almost surely, 2^212211018169 is an apocalyptic number.

It is an amenable number.

212211018169 is a deficient number, since it is larger than the sum of its proper divisors (1).

212211018169 is an equidigital number, since it uses as much as digits as its factorization.

212211018169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 34.

The spelling of 212211018169 in words is "two hundred twelve billion, two hundred eleven million, eighteen thousand, one hundred sixty-nine".