121165351 has 2 divisors, whose sum is σ = 121165352. Its totient is φ = 121165350.

The previous prime is 121165349. The next prime is 121165361. The reversal of 121165351 is 153561121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121165351 - 2¹ = 121165349 is a prime.

Together with 121165349, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121165301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60582675 + 60582676.

It is an arithmetic number, because the mean of its divisors is an integer number (60582676).

Almost surely, 2^121165351 is an apocalyptic number.

121165351 is a deficient number, since it is larger than the sum of its proper divisors (1).

121165351 is an equidigital number, since it uses as much as digits as its factorization.

121165351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 900, while the sum is 25.

The square root of 121165351 is about 11007.5133885905. The cubic root of 121165351 is about 494.8339421901.

The spelling of 121165351 in words is "one hundred twenty-one million, one hundred sixty-five thousand, three hundred fifty-one".