121415510113 has 2 divisors, whose sum is σ = 121415510114. Its totient is φ = 121415510112.

The previous prime is 121415510087. The next prime is 121415510119. The reversal of 121415510113 is 311015514121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79221420369 + 42194089744 = 281463^2 + 205412^2 .

It is a cyclic number.

It is not a de Polignac number, because 121415510113 - 2²¹ = 121413412961 is a prime.

It is not a weakly prime, because it can be changed into another prime (121415510119) 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, 60707755056 + 60707755057.

It is an arithmetic number, because the mean of its divisors is an integer number (60707755057).

Almost surely, 2^121415510113 is an apocalyptic number.

It is an amenable number.

121415510113 is a deficient number, since it is larger than the sum of its proper divisors (1).

121415510113 is an equidigital number, since it uses as much as digits as its factorization.

121415510113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 25.

The spelling of 121415510113 in words is "one hundred twenty-one billion, four hundred fifteen million, five hundred ten thousand, one hundred thirteen".