9901011011069 has 2 divisors, whose sum is σ = 9901011011070. Its totient is φ = 9901011011068.

The previous prime is 9901011010981. The next prime is 9901011011071. The reversal of 9901011011069 is 9601101101099.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9068469732100 + 832541278969 = 3011390^2 + 912437^2 .

It is an emirp because it is prime and its reverse (9601101101099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9901011011069 - 2³⁶ = 9832291534333 is a prime.

It is a super-2 number, since 2×9901011011069² (a number of 27 digits) contains 22 as substring.

Together with 9901011011071, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9901011001069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4950505505534 + 4950505505535.

It is an arithmetic number, because the mean of its divisors is an integer number (4950505505535).

Almost surely, 2^{9901011011069} is an apocalyptic number.

It is an amenable number.

9901011011069 is a deficient number, since it is larger than the sum of its proper divisors (1).

9901011011069 is an equidigital number, since it uses as much as digits as its factorization.

9901011011069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 38.

The spelling of 9901011011069 in words is "nine trillion, nine hundred one billion, eleven million, eleven thousand, sixty-nine".