121516152 has 16 divisors (see below), whose sum is σ = 303790440. Its totient is φ = 40505376.

The previous prime is 121516139. The next prime is 121516159. The reversal of 121516152 is 251615121.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 5063173 = 121516152 / (1 + 2 + 1 + 5 + 1 + 6 + 1 + 5 + 2).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121516159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2531563 + ... + 2531610.

Almost surely, 2^121516152 is an apocalyptic number.

121516152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121516152 is an abundant number, since it is smaller than the sum of its proper divisors (182274288).

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

121516152 is a wasteful number, since it uses less digits than its factorization.

121516152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5063182 (or 5063178 counting only the distinct ones).

The product of its digits is 600, while the sum is 24.

The square root of 121516152 is about 11023.4364877746. The cubic root of 121516152 is about 495.3110339868.

The spelling of 121516152 in words is "one hundred twenty-one million, five hundred sixteen thousand, one hundred fifty-two".