2101120120069 has 2 divisors, whose sum is σ = 2101120120070. Its totient is φ = 2101120120068.

The previous prime is 2101120120061. The next prime is 2101120120133. The reversal of 2101120120069 is 9600210211012.

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., 1791617051169 + 309503068900 = 1338513^2 + 556330^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101120120069 - 2³ = 2101120120061 is a prime.

It is a super-3 number, since 3×2101120120069³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101120120061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050560060034 + 1050560060035.

It is an arithmetic number, because the mean of its divisors is an integer number (1050560060035).

Almost surely, 2^{2101120120069} is an apocalyptic number.

It is an amenable number.

2101120120069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101120120069 is an equidigital number, since it uses as much as digits as its factorization.

2101120120069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 2101120120069 in words is "two trillion, one hundred one billion, one hundred twenty million, one hundred twenty thousand, sixty-nine".