20010010021069 has 2 divisors, whose sum is σ = 20010010021070. Its totient is φ = 20010010021068.

The previous prime is 20010010020919. The next prime is 20010010021073. The reversal of 20010010021069 is 96012001001002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16687184150025 + 3322825871044 = 4084995^2 + 1822862^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010010021069 - 2¹⁹ = 20010009496781 is a prime.

It is a super-4 number, since 4×20010010021069⁴ (a number of 54 digits) contains 4444 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 (20010010021369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005005010534 + 10005005010535.

It is an arithmetic number, because the mean of its divisors is an integer number (10005005010535).

Almost surely, 2^{20010010021069} is an apocalyptic number.

It is an amenable number.

20010010021069 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010010021069 is an equidigital number, since it uses as much as digits as its factorization.

20010010021069 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 22.

The spelling of 20010010021069 in words is "twenty trillion, ten billion, ten million, twenty-one thousand, sixty-nine".