9090110101 has 2 divisors, whose sum is σ = 9090110102. Its totient is φ = 9090110100.

The previous prime is 9090110077. The next prime is 9090110149. The reversal of 9090110101 is 1010110909.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7034847876 + 2055262225 = 83874^2 + 45335^2 .

It is a cyclic number.

It is not a de Polignac number, because 9090110101 - 2¹⁵ = 9090077333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9090180101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4545055050 + 4545055051.

It is an arithmetic number, because the mean of its divisors is an integer number (4545055051).

Almost surely, 2^9090110101 is an apocalyptic number.

It is an amenable number.

9090110101 is a deficient number, since it is larger than the sum of its proper divisors (1).

9090110101 is an equidigital number, since it uses as much as digits as its factorization.

9090110101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 22.

The square root of 9090110101 is about 95342.0688940617. The cubic root of 9090110101 is about 2087.0028773851.

The spelling of 9090110101 in words is "nine billion, ninety million, one hundred ten thousand, one hundred one".