121616351 has 8 divisors (see below), whose sum is σ = 129165264. Its totient is φ = 114111360.

The previous prime is 121616329. The next prime is 121616393. The reversal of 121616351 is 153616121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121616351 - 2²⁶ = 54507487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121616351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121616251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5180 + ... + 16433.

It is an arithmetic number, because the mean of its divisors is an integer number (16145658).

Almost surely, 2^121616351 is an apocalyptic number.

121616351 is a deficient number, since it is larger than the sum of its proper divisors (7548913).

121616351 is a wasteful number, since it uses less digits than its factorization.

121616351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21961.

The product of its digits is 1080, while the sum is 26.

The square root of 121616351 is about 11027.9803681363. The cubic root of 121616351 is about 495.4471367040.

The spelling of 121616351 in words is "one hundred twenty-one million, six hundred sixteen thousand, three hundred fifty-one".