121288652 has 12 divisors (see below), whose sum is σ = 212457336. Its totient is φ = 60586560.

The previous prime is 121288649. The next prime is 121288691. The reversal of 121288652 is 256882121.

It is a happy 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 in 3 ways as a sum of consecutive naturals, for example, 9533 + ... + 18260.

It is an arithmetic number, because the mean of its divisors is an integer number (17704778).

Almost surely, 2^121288652 is an apocalyptic number.

It is an amenable number.

121288652 is a deficient number, since it is larger than the sum of its proper divisors (91168684).

121288652 is a wasteful number, since it uses less digits than its factorization.

121288652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28888 (or 28886 counting only the distinct ones).

The product of its digits is 15360, while the sum is 35.

The square root of 121288652 is about 11013.1127298326. The cubic root of 121288652 is about 495.0017372316.

The spelling of 121288652 in words is "one hundred twenty-one million, two hundred eighty-eight thousand, six hundred fifty-two".