121552115 has 8 divisors (see below), whose sum is σ = 145975200. Its totient is φ = 97166592.

The previous prime is 121552111. The next prime is 121552117. The reversal of 121552115 is 511255121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121552115 - 2² = 121552111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121552111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1694 + ... + 15683.

It is an arithmetic number, because the mean of its divisors is an integer number (18246900).

Almost surely, 2^121552115 is an apocalyptic number.

121552115 is a deficient number, since it is larger than the sum of its proper divisors (24423085).

121552115 is a wasteful number, since it uses less digits than its factorization.

121552115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18781.

The product of its digits is 500, while the sum is 23.

The square root of 121552115 is about 11025.0675734891. The cubic root of 121552115 is about 495.3598920013.

The spelling of 121552115 in words is "one hundred twenty-one million, five hundred fifty-two thousand, one hundred fifteen".