201112600261 has 2 divisors, whose sum is σ = 201112600262. Its totient is φ = 201112600260.

The previous prime is 201112600127. The next prime is 201112600309. The reversal of 201112600261 is 162006211102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200418277761 + 694322500 = 447681^2 + 26350^2 .

It is a cyclic number.

It is not a de Polignac number, because 201112600261 - 2²⁹ = 200575729349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201112600361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100556300130 + 100556300131.

It is an arithmetic number, because the mean of its divisors is an integer number (100556300131).

Almost surely, 2^201112600261 is an apocalyptic number.

It is an amenable number.

201112600261 is a deficient number, since it is larger than the sum of its proper divisors (1).

201112600261 is an equidigital number, since it uses as much as digits as its factorization.

201112600261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 201112600261 its reverse (162006211102), we get a palindrome (363118811363).

The spelling of 201112600261 in words is "two hundred one billion, one hundred twelve million, six hundred thousand, two hundred sixty-one".