121616624 has 10 divisors (see below), whose sum is σ = 235632240. Its totient is φ = 60808304.

The previous prime is 121616611. The next prime is 121616639. The reversal of 121616624 is 426616121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3800504 + ... + 3800535.

It is an arithmetic number, because the mean of its divisors is an integer number (23563224).

Almost surely, 2^121616624 is an apocalyptic number.

It is an amenable number.

121616624 is a deficient number, since it is larger than the sum of its proper divisors (114015616).

121616624 is an equidigital number, since it uses as much as digits as its factorization.

121616624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7601047 (or 7601041 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 121616624 is about 11027.9927457357. The cubic root of 121616624 is about 495.4475074244.

The spelling of 121616624 in words is "one hundred twenty-one million, six hundred sixteen thousand, six hundred twenty-four".