212013121169 has 2 divisors, whose sum is σ = 212013121170. Its totient is φ = 212013121168.

The previous prime is 212013121127. The next prime is 212013121237. The reversal of 212013121169 is 961121310212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194776582225 + 17236538944 = 441335^2 + 131288^2 .

It is a cyclic number.

It is not a de Polignac number, because 212013121169 - 2¹⁶ = 212013055633 is a prime.

It is a super-2 number, since 2×212013121169² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212013123169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006560584 + 106006560585.

It is an arithmetic number, because the mean of its divisors is an integer number (106006560585).

Almost surely, 2^212013121169 is an apocalyptic number.

It is an amenable number.

212013121169 is a deficient number, since it is larger than the sum of its proper divisors (1).

212013121169 is an equidigital number, since it uses as much as digits as its factorization.

212013121169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 212013121169 in words is "two hundred twelve billion, thirteen million, one hundred twenty-one thousand, one hundred sixty-nine".