2012121121169 has 2 divisors, whose sum is σ = 2012121121170. Its totient is φ = 2012121121168.

The previous prime is 2012121121097. The next prime is 2012121121181. The reversal of 2012121121169 is 9611211212102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1953551313025 + 58569808144 = 1397695^2 + 242012^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012121121169 is a prime.

It is a super-2 number, since 2×2012121121169² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2012121121189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006060560584 + 1006060560585.

It is an arithmetic number, because the mean of its divisors is an integer number (1006060560585).

Almost surely, 2^{2012121121169} is an apocalyptic number.

It is an amenable number.

2012121121169 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012121121169 is an equidigital number, since it uses as much as digits as its factorization.

2012121121169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 29.

The spelling of 2012121121169 in words is "two trillion, twelve billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred sixty-nine".