2011120021109 has 2 divisors, whose sum is σ = 2011120021110. Its totient is φ = 2011120021108.

The previous prime is 2011120021069. The next prime is 2011120021123. The reversal of 2011120021109 is 9011200211102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1580167160209 + 430952860900 = 1257047^2 + 656470^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011120021109 - 2¹⁶ = 2011119955573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011120021139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005560010554 + 1005560010555.

It is an arithmetic number, because the mean of its divisors is an integer number (1005560010555).

Almost surely, 2^{2011120021109} is an apocalyptic number.

It is an amenable number.

2011120021109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011120021109 is an equidigital number, since it uses as much as digits as its factorization.

2011120021109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 2011120021109 in words is "two trillion, eleven billion, one hundred twenty million, twenty-one thousand, one hundred nine".