211011121169 has 2 divisors, whose sum is σ = 211011121170. Its totient is φ = 211011121168.

The previous prime is 211011121117. The next prime is 211011121193. The reversal of 211011121169 is 961121110112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210080139025 + 930982144 = 458345^2 + 30512^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211011121169 is a prime.

It is a super-2 number, since 2×211011121169² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (211011121199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105505560584 + 105505560585.

It is an arithmetic number, because the mean of its divisors is an integer number (105505560585).

Almost surely, 2^211011121169 is an apocalyptic number.

It is an amenable number.

211011121169 is a deficient number, since it is larger than the sum of its proper divisors (1).

211011121169 is an equidigital number, since it uses as much as digits as its factorization.

211011121169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 26.

The spelling of 211011121169 in words is "two hundred eleven billion, eleven million, one hundred twenty-one thousand, one hundred sixty-nine".