121560612 has 48 divisors (see below), whose sum is σ = 302303232. Its totient is φ = 37929760.

The previous prime is 121560601. The next prime is 121560653. The reversal of 121560612 is 216065121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8287 + ... + 17657.

It is an arithmetic number, because the mean of its divisors is an integer number (6297984).

Almost surely, 2^121560612 is an apocalyptic number.

121560612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121560612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151151616).

121560612 is an abundant number, since it is smaller than the sum of its proper divisors (180742620).

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

121560612 is a wasteful number, since it uses less digits than its factorization.

121560612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9448 (or 9446 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 121560612 is about 11025.4529158670. The cubic root of 121560612 is about 495.3714343068.

The spelling of 121560612 in words is "one hundred twenty-one million, five hundred sixty thousand, six hundred twelve".