2011101000221 has 2 divisors, whose sum is σ = 2011101000222. Its totient is φ = 2011101000220.

The previous prime is 2011101000211. The next prime is 2011101000241. The reversal of 2011101000221 is 1220001011102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1998915268900 + 12185731321 = 1413830^2 + 110389^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011101000221 - 2³⁰ = 2010027258397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011101000211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005550500110 + 1005550500111.

It is an arithmetic number, because the mean of its divisors is an integer number (1005550500111).

Almost surely, 2^{2011101000221} is an apocalyptic number.

It is an amenable number.

2011101000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011101000221 is an equidigital number, since it uses as much as digits as its factorization.

2011101000221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2011101000221 its reverse (1220001011102), we get a palindrome (3231102011323).

The spelling of 2011101000221 in words is "two trillion, eleven billion, one hundred one million, two hundred twenty-one", and thus it is an aban number.