121616877 has 8 divisors (see below), whose sum is σ = 164904480. Its totient is φ = 79703600.

The previous prime is 121616867. The next prime is 121616879. The reversal of 121616877 is 778616121.

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 121616877 - 2¹⁹ = 121092589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121616879) 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, 343374 + ... + 343727.

It is an arithmetic number, because the mean of its divisors is an integer number (20613060).

Almost surely, 2^121616877 is an apocalyptic number.

It is an amenable number.

121616877 is a deficient number, since it is larger than the sum of its proper divisors (43287603).

121616877 is an equidigital number, since it uses as much as digits as its factorization.

121616877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687163.

The product of its digits is 28224, while the sum is 39.

The square root of 121616877 is about 11028.0042165389. The cubic root of 121616877 is about 495.4478509852.

The spelling of 121616877 in words is "one hundred twenty-one million, six hundred sixteen thousand, eight hundred seventy-seven".