212021102212169 has 2 divisors, whose sum is σ = 212021102212170. Its totient is φ = 212021102212168.

The previous prime is 212021102212141. The next prime is 212021102212201. The reversal of 212021102212169 is 961212201120212.

It is an a-pointer prime, because the next prime (212021102212201) can be obtained adding 212021102212169 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186235150240000 + 25785951972169 = 13646800^2 + 5077987^2 .

It is a cyclic number.

It is not a de Polignac number, because 212021102212169 - 2³⁶ = 211952382735433 is a prime.

It is a super-2 number, since 2×212021102212169² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212021102292169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010551106084 + 106010551106085.

It is an arithmetic number, because the mean of its divisors is an integer number (106010551106085).

Almost surely, 2^{212021102212169} is an apocalyptic number.

It is an amenable number.

212021102212169 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021102212169 is an equidigital number, since it uses as much as digits as its factorization.

212021102212169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 32.

The spelling of 212021102212169 in words is "two hundred twelve trillion, twenty-one billion, one hundred two million, two hundred twelve thousand, one hundred sixty-nine".