2010312721 has 2 divisors, whose sum is σ = 2010312722. Its totient is φ = 2010312720.

The previous prime is 2010312709. The next prime is 2010312757. The reversal of 2010312721 is 1272130102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1959390225 + 50922496 = 44265^2 + 7136^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010312721 - 2⁹ = 2010312209 is a prime.

It is not a weakly prime, because it can be changed into another prime (2010312791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005156360 + 1005156361.

It is an arithmetic number, because the mean of its divisors is an integer number (1005156361).

Almost surely, 2^2010312721 is an apocalyptic number.

It is an amenable number.

2010312721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2010312721 is an equidigital number, since it uses as much as digits as its factorization.

2010312721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 2010312721 is about 44836.5110261715. The cubic root of 2010312721 is about 1262.0828741382.

Adding to 2010312721 its reverse (1272130102), we get a palindrome (3282442823).

The spelling of 2010312721 in words is "two billion, ten million, three hundred twelve thousand, seven hundred twenty-one".