121215303405241 has 2 divisors, whose sum is σ = 121215303405242. Its totient is φ = 121215303405240.

The previous prime is 121215303405193. The next prime is 121215303405247. The reversal of 121215303405241 is 142504303512121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113141067494841 + 8074235910400 = 10636779^2 + 2841520^2 .

It is a cyclic number.

It is not a de Polignac number, because 121215303405241 - 2²³ = 121215295016633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121215303405197 and 121215303405206.

It is not a weakly prime, because it can be changed into another prime (121215303405247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60607651702620 + 60607651702621.

It is an arithmetic number, because the mean of its divisors is an integer number (60607651702621).

Almost surely, 2^{121215303405241} is an apocalyptic number.

It is an amenable number.

121215303405241 is a deficient number, since it is larger than the sum of its proper divisors (1).

121215303405241 is an equidigital number, since it uses as much as digits as its factorization.

121215303405241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 121215303405241 its reverse (142504303512121), we get a palindrome (263719606917362).

The spelling of 121215303405241 in words is "one hundred twenty-one trillion, two hundred fifteen billion, three hundred three million, four hundred five thousand, two hundred forty-one".