101111120261 has 2 divisors, whose sum is σ = 101111120262. Its totient is φ = 101111120260.

The previous prime is 101111120219. The next prime is 101111120281. The reversal of 101111120261 is 162021111101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86726716036 + 14384404225 = 294494^2 + 119935^2 .

It is a cyclic number.

It is not a de Polignac number, because 101111120261 - 2⁶ = 101111120197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101111120281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50555560130 + 50555560131.

It is an arithmetic number, because the mean of its divisors is an integer number (50555560131).

Almost surely, 2^101111120261 is an apocalyptic number.

It is an amenable number.

101111120261 is a deficient number, since it is larger than the sum of its proper divisors (1).

101111120261 is an equidigital number, since it uses as much as digits as its factorization.

101111120261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 101111120261 its reverse (162021111101), we get a palindrome (263132231362).

The spelling of 101111120261 in words is "one hundred one billion, one hundred eleven million, one hundred twenty thousand, two hundred sixty-one".