9911049905101 has 2 divisors, whose sum is σ = 9911049905102. Its totient is φ = 9911049905100.

The previous prime is 9911049905083. The next prime is 9911049905147. The reversal of 9911049905101 is 1015099401199.

9911049905101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8031754381225 + 1879295523876 = 2834035^2 + 1370874^2 .

It is a cyclic number.

It is not a de Polignac number, because 9911049905101 - 2²⁷ = 9910915687373 is a prime.

It is a super-2 number, since 2×9911049905101² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9911049905201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4955524952550 + 4955524952551.

It is an arithmetic number, because the mean of its divisors is an integer number (4955524952551).

Almost surely, 2^{9911049905101} is an apocalyptic number.

It is an amenable number.

9911049905101 is a deficient number, since it is larger than the sum of its proper divisors (1).

9911049905101 is an equidigital number, since it uses as much as digits as its factorization.

9911049905101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131220, while the sum is 49.

The spelling of 9911049905101 in words is "nine trillion, nine hundred eleven billion, forty-nine million, nine hundred five thousand, one hundred one".