2011010220221 has 2 divisors, whose sum is σ = 2011010220222. Its totient is φ = 2011010220220.

The previous prime is 2011010220181. The next prime is 2011010220251. The reversal of 2011010220221 is 1220220101102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1939574294596 + 71435925625 = 1392686^2 + 267275^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011010220221 - 2¹⁸ = 2011009958077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2011010220196 and 2011010220205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011010220251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005505110110 + 1005505110111.

It is an arithmetic number, because the mean of its divisors is an integer number (1005505110111).

Almost surely, 2^{2011010220221} is an apocalyptic number.

It is an amenable number.

2011010220221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011010220221 is an equidigital number, since it uses as much as digits as its factorization.

2011010220221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2011010220221 its reverse (1220220101102), we get a palindrome (3231230321323).

The spelling of 2011010220221 in words is "two trillion, eleven billion, ten million, two hundred twenty thousand, two hundred twenty-one".