2112021121169 has 2 divisors, whose sum is σ = 2112021121170. Its totient is φ = 2112021121168.

The previous prime is 2112021121159. The next prime is 2112021121291. The reversal of 2112021121169 is 9611211202112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1904551803025 + 207469318144 = 1380055^2 + 455488^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112021121169 - 2¹⁶ = 2112021055633 is a prime.

It is a super-2 number, since 2×2112021121169² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2112021121139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056010560584 + 1056010560585.

It is an arithmetic number, because the mean of its divisors is an integer number (1056010560585).

Almost surely, 2^{2112021121169} is an apocalyptic number.

It is an amenable number.

2112021121169 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112021121169 is an equidigital number, since it uses as much as digits as its factorization.

2112021121169 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 2112021121169 in words is "two trillion, one hundred twelve billion, twenty-one million, one hundred twenty-one thousand, one hundred sixty-nine".