2201198261 has 2 divisors, whose sum is σ = 2201198262. Its totient is φ = 2201198260.

The previous prime is 2201198257. The next prime is 2201198287. The reversal of 2201198261 is 1628911022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1772915236 + 428283025 = 42106^2 + 20695^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201198261 - 2² = 2201198257 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2201195261) 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, 1100599130 + 1100599131.

It is an arithmetic number, because the mean of its divisors is an integer number (1100599131).

Almost surely, 2^2201198261 is an apocalyptic number.

It is an amenable number.

2201198261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2201198261 is an equidigital number, since it uses as much as digits as its factorization.

2201198261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 2201198261 is about 46916.9293645695. The cubic root of 2201198261 is about 1300.8275324801.

The spelling of 2201198261 in words is "two billion, two hundred one million, one hundred ninety-eight thousand, two hundred sixty-one".