2011110221009 has 2 divisors, whose sum is σ = 2011110221010. Its totient is φ = 2011110221008.

The previous prime is 2011110220997. The next prime is 2011110221047. The reversal of 2011110221009 is 9001220111102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1959308461009 + 51801760000 = 1399753^2 + 227600^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011110221009 - 2⁴ = 2011110220993 is a prime.

It is not a weakly prime, because it can be changed into another prime (2011110221209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005555110504 + 1005555110505.

It is an arithmetic number, because the mean of its divisors is an integer number (1005555110505).

Almost surely, 2^{2011110221009} is an apocalyptic number.

It is an amenable number.

2011110221009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011110221009 is an equidigital number, since it uses as much as digits as its factorization.

2011110221009 is an evil number, because the sum of its binary digits is even.

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

The spelling of 2011110221009 in words is "two trillion, eleven billion, one hundred ten million, two hundred twenty-one thousand, nine".