9538890117121 has 2 divisors, whose sum is σ = 9538890117122. Its totient is φ = 9538890117120.

The previous prime is 9538890117077. The next prime is 9538890117161. The reversal of 9538890117121 is 1217110988359.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8721744627600 + 817145489521 = 2953260^2 + 903961^2 .

It is a cyclic number.

It is not a de Polignac number, because 9538890117121 - 2⁷ = 9538890116993 is a prime.

It is not a weakly prime, because it can be changed into another prime (9538890117161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4769445058560 + 4769445058561.

It is an arithmetic number, because the mean of its divisors is an integer number (4769445058561).

Almost surely, 2^{9538890117121} is an apocalyptic number.

It is an amenable number.

9538890117121 is a deficient number, since it is larger than the sum of its proper divisors (1).

9538890117121 is an equidigital number, since it uses as much as digits as its factorization.

9538890117121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 55.

The spelling of 9538890117121 in words is "nine trillion, five hundred thirty-eight billion, eight hundred ninety million, one hundred seventeen thousand, one hundred twenty-one".