260002121 has 2 divisors, whose sum is σ = 260002122. Its totient is φ = 260002120.

The previous prime is 260002091. The next prime is 260002151. The reversal of 260002121 is 121200062.

It is a balanced prime because it is at equal distance from previous prime (260002091) and next prime (260002151).

It can be written as a sum of positive squares in only one way, i.e., 180096400 + 79905721 = 13420^2 + 8939^2 .

It is a cyclic number.

It is not a de Polignac number, because 260002121 - 2²⁶ = 192893257 is a prime.

It is a super-2 number, since 2×260002121² = 135202205848997282, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 260002096 and 260002105.

It is not a weakly prime, because it can be changed into another prime (260002151) 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, 130001060 + 130001061.

It is an arithmetic number, because the mean of its divisors is an integer number (130001061).

Almost surely, 2^260002121 is an apocalyptic number.

It is an amenable number.

260002121 is a deficient number, since it is larger than the sum of its proper divisors (1).

260002121 is an equidigital number, since it uses as much as digits as its factorization.

260002121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 260002121 is about 16124.5812658810. The cubic root of 260002121 is about 638.2521654315.

Adding to 260002121 its reverse (121200062), we get a palindrome (381202183).

The spelling of 260002121 in words is "two hundred sixty million, two thousand, one hundred twenty-one".