2010202121 has 2 divisors, whose sum is σ = 2010202122. Its totient is φ = 2010202120.

The previous prime is 2010202097. The next prime is 2010202127. The reversal of 2010202121 is 1212020102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1930635721 + 79566400 = 43939^2 + 8920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2010202121 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2010202127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005101060 + 1005101061.

It is an arithmetic number, because the mean of its divisors is an integer number (1005101061).

Almost surely, 2^2010202121 is an apocalyptic number.

It is an amenable number.

2010202121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2010202121 is an equidigital number, since it uses as much as digits as its factorization.

2010202121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2010202121 is about 44835.2776393768. The cubic root of 2010202121 is about 1262.0597286636.

Adding to 2010202121 its reverse (1212020102), we get a palindrome (3222222223).

The spelling of 2010202121 in words is "two billion, ten million, two hundred two thousand, one hundred twenty-one".