2111320124009 has 2 divisors, whose sum is σ = 2111320124010. Its totient is φ = 2111320124008.

The previous prime is 2111320123949. The next prime is 2111320124041. The reversal of 2111320124009 is 9004210231112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1851240523609 + 260079600400 = 1360603^2 + 509980^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111320124009 - 2²⁰ = 2111319075433 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111320124099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055660062004 + 1055660062005.

It is an arithmetic number, because the mean of its divisors is an integer number (1055660062005).

Almost surely, 2^{2111320124009} is an apocalyptic number.

It is an amenable number.

2111320124009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111320124009 is an equidigital number, since it uses as much as digits as its factorization.

2111320124009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 2111320124009 in words is "two trillion, one hundred eleven billion, three hundred twenty million, one hundred twenty-four thousand, nine".