121716252 has 72 divisors (see below), whose sum is σ = 352666496. Its totient is φ = 34673184.

The previous prime is 121716239. The next prime is 121716281. The reversal of 121716252 is 252617121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137403 + ... + 138285.

Almost surely, 2^121716252 is an apocalyptic number.

121716252 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 121716252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176333248).

121716252 is an abundant number, since it is smaller than the sum of its proper divisors (230950244).

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

121716252 is a wasteful number, since it uses less digits than its factorization.

121716252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447 (or 1442 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 121716252 is about 11032.5088715124. The cubic root of 121716252 is about 495.5827602381.

The spelling of 121716252 in words is "one hundred twenty-one million, seven hundred sixteen thousand, two hundred fifty-two".