121617377 has 16 divisors (see below), whose sum is σ = 140987520. Its totient is φ = 102757248.

The previous prime is 121617323. The next prime is 121617383. The reversal of 121617377 is 773716121.

It is a cyclic number.

It is not a de Polignac number, because 121617377 - 2⁶ = 121617313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121617317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297149 + ... + 297557.

It is an arithmetic number, because the mean of its divisors is an integer number (8811720).

Almost surely, 2^121617377 is an apocalyptic number.

It is an amenable number.

121617377 is a deficient number, since it is larger than the sum of its proper divisors (19370143).

121617377 is a wasteful number, since it uses less digits than its factorization.

121617377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920.

The product of its digits is 12348, while the sum is 35.

The square root of 121617377 is about 11028.0268860753. The cubic root of 121617377 is about 495.4485299579.

The spelling of 121617377 in words is "one hundred twenty-one million, six hundred seventeen thousand, three hundred seventy-seven".