2011220000221 has 2 divisors, whose sum is σ = 2011220000222. Its totient is φ = 2011220000220.

The previous prime is 2011220000203. The next prime is 2011220000239. The reversal of 2011220000221 is 1220000221102.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2011220000203) and next prime (2011220000239).

It can be written as a sum of positive squares in only one way, i.e., 1146805392100 + 864414608121 = 1070890^2 + 929739^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011220000221 - 2²¹ = 2011217903069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011221000221) 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, 1005610000110 + 1005610000111.

It is an arithmetic number, because the mean of its divisors is an integer number (1005610000111).

Almost surely, 2^{2011220000221} is an apocalyptic number.

It is an amenable number.

2011220000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011220000221 is an equidigital number, since it uses as much as digits as its factorization.

2011220000221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2011220000221 its reverse (1220000221102), we get a palindrome (3231220221323).

The spelling of 2011220000221 in words is "two trillion, eleven billion, two hundred twenty million, two hundred twenty-one", and thus it is an aban number.