121300261 has 2 divisors, whose sum is σ = 121300262. Its totient is φ = 121300260.

The previous prime is 121300159. The next prime is 121300271. The reversal of 121300261 is 162003121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102212100 + 19088161 = 10110^2 + 4369^2 .

It is a cyclic number.

It is not a de Polignac number, because 121300261 - 2¹⁷ = 121169189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121300271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60650130 + 60650131.

It is an arithmetic number, because the mean of its divisors is an integer number (60650131).

Almost surely, 2^121300261 is an apocalyptic number.

It is an amenable number.

121300261 is a deficient number, since it is larger than the sum of its proper divisors (1).

121300261 is an equidigital number, since it uses as much as digits as its factorization.

121300261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 121300261 is about 11013.6397707570. The cubic root of 121300261 is about 495.0175295632.

Adding to 121300261 its reverse (162003121), we get a palindrome (283303382).

The spelling of 121300261 in words is "one hundred twenty-one million, three hundred thousand, two hundred sixty-one".