2021012002069 has 2 divisors, whose sum is σ = 2021012002070. Its totient is φ = 2021012002068.

The previous prime is 2021012002021. The next prime is 2021012002103. The reversal of 2021012002069 is 9602002101202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2020485987844 + 526014225 = 1421438^2 + 22935^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021012002069 - 2¹³ = 2021011993877 is a prime.

It is a super-2 number, since 2×2021012002069² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021012002369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010506001034 + 1010506001035.

It is an arithmetic number, because the mean of its divisors is an integer number (1010506001035).

Almost surely, 2^{2021012002069} is an apocalyptic number.

It is an amenable number.

2021012002069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021012002069 is an equidigital number, since it uses as much as digits as its factorization.

2021012002069 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 25.

The spelling of 2021012002069 in words is "two trillion, twenty-one billion, twelve million, two thousand, sixty-nine".