201108326261 has 2 divisors, whose sum is σ = 201108326262. Its totient is φ = 201108326260.

The previous prime is 201108326173. The next prime is 201108326281. The reversal of 201108326261 is 162623801102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199965480625 + 1142845636 = 447175^2 + 33806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201108326261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201108326281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100554163130 + 100554163131.

It is an arithmetic number, because the mean of its divisors is an integer number (100554163131).

Almost surely, 2^201108326261 is an apocalyptic number.

It is an amenable number.

201108326261 is a deficient number, since it is larger than the sum of its proper divisors (1).

201108326261 is an equidigital number, since it uses as much as digits as its factorization.

201108326261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 201108326261 in words is "two hundred one billion, one hundred eight million, three hundred twenty-six thousand, two hundred sixty-one".