2101000120169 has 2 divisors, whose sum is σ = 2101000120170. Its totient is φ = 2101000120168.

The previous prime is 2101000120159. The next prime is 2101000120187. The reversal of 2101000120169 is 9610210001012.

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., 1815163398400 + 285836721769 = 1347280^2 + 534637^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101000120169 - 2¹² = 2101000116073 is a prime.

It is a super-2 number, since 2×2101000120169² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2101000120159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050500060084 + 1050500060085.

It is an arithmetic number, because the mean of its divisors is an integer number (1050500060085).

Almost surely, 2^{2101000120169} is an apocalyptic number.

It is an amenable number.

2101000120169 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101000120169 is an equidigital number, since it uses as much as digits as its factorization.

2101000120169 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 23.

The spelling of 2101000120169 in words is "two trillion, one hundred one billion, one hundred twenty thousand, one hundred sixty-nine".