2111120011009 has 2 divisors, whose sum is σ = 2111120011010. Its totient is φ = 2111120011008.

The previous prime is 2111120011001. The next prime is 2111120011081. The reversal of 2111120011009 is 9001100211112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1695797763984 + 415322247025 = 1302228^2 + 644455^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111120011009 - 2³ = 2111120011001 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111120011001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055560005504 + 1055560005505.

It is an arithmetic number, because the mean of its divisors is an integer number (1055560005505).

Almost surely, 2^{2111120011009} is an apocalyptic number.

It is an amenable number.

2111120011009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111120011009 is an equidigital number, since it uses as much as digits as its factorization.

2111120011009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 2111120011009 in words is "two trillion, one hundred eleven billion, one hundred twenty million, eleven thousand, nine".