9112110221 has 2 divisors, whose sum is σ = 9112110222. Its totient is φ = 9112110220.

The previous prime is 9112110199. The next prime is 9112110239. The reversal of 9112110221 is 1220112119.

9112110221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7256654596 + 1855455625 = 85186^2 + 43075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9112110221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9112110193 and 9112110202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9112130221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4556055110 + 4556055111.

It is an arithmetic number, because the mean of its divisors is an integer number (4556055111).

Almost surely, 2^9112110221 is an apocalyptic number.

It is an amenable number.

9112110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

9112110221 is an equidigital number, since it uses as much as digits as its factorization.

9112110221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 9112110221 is about 95457.3738429882. The cubic root of 9112110221 is about 2088.6851937323.

The spelling of 9112110221 in words is "nine billion, one hundred twelve million, one hundred ten thousand, two hundred twenty-one".