2201270261 has 2 divisors, whose sum is σ = 2201270262. Its totient is φ = 2201270260.

The previous prime is 2201270257. The next prime is 2201270293. The reversal of 2201270261 is 1620721022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2140912900 + 60357361 = 46270^2 + 7769^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201270261 - 2² = 2201270257 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2201270231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100635130 + 1100635131.

It is an arithmetic number, because the mean of its divisors is an integer number (1100635131).

Almost surely, 2^2201270261 is an apocalyptic number.

It is an amenable number.

2201270261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2201270261 is an equidigital number, since it uses as much as digits as its factorization.

2201270261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 2201270261 is about 46917.6966719382. The cubic root of 2201270261 is about 1300.8417154463.

Adding to 2201270261 its reverse (1620721022), we get a palindrome (3821991283).

The spelling of 2201270261 in words is "two billion, two hundred one million, two hundred seventy thousand, two hundred sixty-one".