2010291221 has 2 divisors, whose sum is σ = 2010291222. Its totient is φ = 2010291220.

The previous prime is 2010291211. The next prime is 2010291233. The reversal of 2010291221 is 1221920102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1839466321 + 170824900 = 42889^2 + 13070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2010291221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2010291193 and 2010291202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2010291211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005145610 + 1005145611.

It is an arithmetic number, because the mean of its divisors is an integer number (1005145611).

Almost surely, 2^2010291221 is an apocalyptic number.

It is an amenable number.

2010291221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2010291221 is an equidigital number, since it uses as much as digits as its factorization.

2010291221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 2010291221 is about 44836.2712655725. The cubic root of 2010291221 is about 1262.0783748583.

The spelling of 2010291221 in words is "two billion, ten million, two hundred ninety-one thousand, two hundred twenty-one".