121051517 has 2 divisors, whose sum is σ = 121051518. Its totient is φ = 121051516.

The previous prime is 121051499. The next prime is 121051519. The reversal of 121051517 is 715150121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71334916 + 49716601 = 8446^2 + 7051^2 .

It is a cyclic number.

It is not a de Polignac number, because 121051517 - 2¹⁰ = 121050493 is a prime.

Together with 121051519, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121051492 and 121051501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121051519) 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, 60525758 + 60525759.

It is an arithmetic number, because the mean of its divisors is an integer number (60525759).

Almost surely, 2^121051517 is an apocalyptic number.

It is an amenable number.

121051517 is a deficient number, since it is larger than the sum of its proper divisors (1).

121051517 is an equidigital number, since it uses as much as digits as its factorization.

121051517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 350, while the sum is 23.

The square root of 121051517 is about 11002.3414326224. The cubic root of 121051517 is about 494.6789292927.

The spelling of 121051517 in words is "one hundred twenty-one million, fifty-one thousand, five hundred seventeen".