611021522201 has 2 divisors, whose sum is σ = 611021522202. Its totient is φ = 611021522200.

The previous prime is 611021522159. The next prime is 611021522213. The reversal of 611021522201 is 102225120116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 584764560601 + 26256961600 = 764699^2 + 162040^2 .

It is a cyclic number.

It is not a de Polignac number, because 611021522201 - 2¹⁰ = 611021521177 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 (611021552201) 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, 305510761100 + 305510761101.

It is an arithmetic number, because the mean of its divisors is an integer number (305510761101).

Almost surely, 2^611021522201 is an apocalyptic number.

It is an amenable number.

611021522201 is a deficient number, since it is larger than the sum of its proper divisors (1).

611021522201 is an equidigital number, since it uses as much as digits as its factorization.

611021522201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 611021522201 its reverse (102225120116), we get a palindrome (713246642317).

The spelling of 611021522201 in words is "six hundred eleven billion, twenty-one million, five hundred twenty-two thousand, two hundred one".