121233616 has 20 divisors (see below), whose sum is σ = 268446112. Its totient is φ = 51957216.

The previous prime is 121233611. The next prime is 121233617. The reversal of 121233616 is 616332121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121233611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541110 + ... + 541333.

Almost surely, 2^121233616 is an apocalyptic number.

121233616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121233616 is an abundant number, since it is smaller than the sum of its proper divisors (147212496).

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

121233616 is a wasteful number, since it uses less digits than its factorization.

121233616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082458 (or 1082452 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 121233616 is about 11010.6137885224. The cubic root of 121233616 is about 494.9268551582.

Adding to 121233616 its reverse (616332121), we get a palindrome (737565737).

The spelling of 121233616 in words is "one hundred twenty-one million, two hundred thirty-three thousand, six hundred sixteen".