610611084221 has 2 divisors, whose sum is σ = 610611084222. Its totient is φ = 610611084220.

The previous prime is 610611084217. The next prime is 610611084269. The reversal of 610611084221 is 122480116016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 498416232196 + 112194852025 = 705986^2 + 334955^2 .

It is a cyclic number.

It is not a de Polignac number, because 610611084221 - 2² = 610611084217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (610611084271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305305542110 + 305305542111.

It is an arithmetic number, because the mean of its divisors is an integer number (305305542111).

Almost surely, 2^610611084221 is an apocalyptic number.

It is an amenable number.

610611084221 is a deficient number, since it is larger than the sum of its proper divisors (1).

610611084221 is an equidigital number, since it uses as much as digits as its factorization.

610611084221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 32.

The spelling of 610611084221 in words is "six hundred ten billion, six hundred eleven million, eighty-four thousand, two hundred twenty-one".