121616612 has 24 divisors (see below), whose sum is σ = 230232576. Its totient is φ = 55878048.

The previous prime is 121616611. The next prime is 121616639. The reversal of 121616612 is 216616121.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (121616611) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 6653 + ... + 16955.

It is an arithmetic number, because the mean of its divisors is an integer number (9593024).

Almost surely, 2^121616612 is an apocalyptic number.

It is an amenable number.

121616612 is a deficient number, since it is larger than the sum of its proper divisors (108615964).

121616612 is a wasteful number, since it uses less digits than its factorization.

121616612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10547 (or 10545 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

The square root of 121616612 is about 11027.9922016657. The cubic root of 121616612 is about 495.4474911290.

The spelling of 121616612 in words is "one hundred twenty-one million, six hundred sixteen thousand, six hundred twelve".