121216152 has 32 divisors (see below), whose sum is σ = 303612480. Its totient is φ = 40329120.

The previous prime is 121216129. The next prime is 121216157. The reversal of 121216152 is 251612121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121216157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9027 + ... + 17997.

It is an arithmetic number, because the mean of its divisors is an integer number (9487890).

Almost surely, 2^121216152 is an apocalyptic number.

121216152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121216152 is an abundant number, since it is smaller than the sum of its proper divisors (182396328).

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

121216152 is a wasteful number, since it uses less digits than its factorization.

121216152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9543 (or 9539 counting only the distinct ones).

The product of its digits is 240, while the sum is 21.

The square root of 121216152 is about 11009.8207069870. The cubic root of 121216152 is about 494.9030888741.

Adding to 121216152 its reverse (251612121), we get a palindrome (372828273).

The spelling of 121216152 in words is "one hundred twenty-one million, two hundred sixteen thousand, one hundred fifty-two".