10111001009 has 2 divisors, whose sum is σ = 10111001010. Its totient is φ = 10111001008.

The previous prime is 10111000979. The next prime is 10111001011. The reversal of 10111001009 is 90010011101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5662111009 + 4448890000 = 75247^2 + 66700^2 .

It is a cyclic number.

It is not a de Polignac number, because 10111001009 - 2¹⁶ = 10110935473 is a prime.

Together with 10111001011, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 10111000984 and 10111001002.

It is not a weakly prime, because it can be changed into another prime (10111001309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055500504 + 5055500505.

It is an arithmetic number, because the mean of its divisors is an integer number (5055500505).

Almost surely, 2^10111001009 is an apocalyptic number.

It is an amenable number.

10111001009 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111001009 is an equidigital number, since it uses as much as digits as its factorization.

10111001009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 14.

The spelling of 10111001009 in words is "ten billion, one hundred eleven million, one thousand, nine".