212221200111169 has 2 divisors, whose sum is σ = 212221200111170. Its totient is φ = 212221200111168.

The previous prime is 212221200111143. The next prime is 212221200111209. The reversal of 212221200111169 is 961111002122212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190832536066225 + 21388664044944 = 13814215^2 + 4624788^2 .

It is a cyclic number.

It is not a de Polignac number, because 212221200111169 - 2¹⁹ = 212221199586881 is a prime.

It is a super-2 number, since 2×212221200111169² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212221200111169.

It is not a weakly prime, because it can be changed into another prime (212221207111169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106110600055584 + 106110600055585.

It is an arithmetic number, because the mean of its divisors is an integer number (106110600055585).

Almost surely, 2^{212221200111169} is an apocalyptic number.

It is an amenable number.

212221200111169 is a deficient number, since it is larger than the sum of its proper divisors (1).

212221200111169 is an equidigital number, since it uses as much as digits as its factorization.

212221200111169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 31.

The spelling of 212221200111169 in words is "two hundred twelve trillion, two hundred twenty-one billion, two hundred million, one hundred eleven thousand, one hundred sixty-nine".