2011000320221 has 2 divisors, whose sum is σ = 2011000320222. Its totient is φ = 2011000320220.

The previous prime is 2011000320181. The next prime is 2011000320227. The reversal of 2011000320221 is 1220230001102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1906639017721 + 104361302500 = 1380811^2 + 323050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011000320221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2011000320196 and 2011000320205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011000320227) 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, 1005500160110 + 1005500160111.

It is an arithmetic number, because the mean of its divisors is an integer number (1005500160111).

Almost surely, 2^{2011000320221} is an apocalyptic number.

It is an amenable number.

2011000320221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011000320221 is an equidigital number, since it uses as much as digits as its factorization.

2011000320221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2011000320221 its reverse (1220230001102), we get a palindrome (3231230321323).

The spelling of 2011000320221 in words is "two trillion, eleven billion, three hundred twenty thousand, two hundred twenty-one".