121610616 has 16 divisors (see below), whose sum is σ = 304026600. Its totient is φ = 40536864.

The previous prime is 121610563. The next prime is 121610647. The reversal of 121610616 is 616016121.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 5067109 = 121610616 / (1 + 2 + 1 + 6 + 1 + 0 + 6 + 1 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2533531 + ... + 2533578.

Almost surely, 2^121610616 is an apocalyptic number.

It is an amenable number.

121610616 is an abundant number, since it is smaller than the sum of its proper divisors (182415984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121610616 is a wasteful number, since it uses less digits than its factorization.

121610616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5067118 (or 5067114 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 121610616 is about 11027.7203446587. The cubic root of 121610616 is about 495.4393487326.

Adding to 121610616 its reverse (616016121), we get a palindrome (737626737).

The spelling of 121610616 in words is "one hundred twenty-one million, six hundred ten thousand, six hundred sixteen".