10111210009 has 2 divisors, whose sum is σ = 10111210010. Its totient is φ = 10111210008.

The previous prime is 10111209967. The next prime is 10111210033. The reversal of 10111210009 is 90001211101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9894678784 + 216531225 = 99472^2 + 14715^2 .

It is a cyclic number.

It is not a de Polignac number, because 10111210009 - 2¹¹ = 10111207961 is a prime.

It is a super-2 number, since 2×10111210009² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10111209974 and 10111210001.

It is not a weakly prime, because it can be changed into another prime (10111210049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055605004 + 5055605005.

It is an arithmetic number, because the mean of its divisors is an integer number (5055605005).

Almost surely, 2^10111210009 is an apocalyptic number.

It is an amenable number.

10111210009 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111210009 is an equidigital number, since it uses as much as digits as its factorization.

10111210009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 16.

The spelling of 10111210009 in words is "ten billion, one hundred eleven million, two hundred ten thousand, nine".