121216352 has 48 divisors (see below), whose sum is σ = 252750960. Its totient is φ = 57065472.

The previous prime is 121216349. The next prime is 121216357. The reversal of 121216352 is 253612121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121216357) 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, 116828 + ... + 117860.

It is an arithmetic number, because the mean of its divisors is an integer number (5265645).

Almost surely, 2^121216352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121216352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126375480).

121216352 is an abundant number, since it is smaller than the sum of its proper divisors (131534608).

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

121216352 is a wasteful number, since it uses less digits than its factorization.

121216352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255 (or 1247 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 121216352 is about 11009.8297897833. The cubic root of 121216352 is about 494.9033610616.

Adding to 121216352 its reverse (253612121), we get a palindrome (374828473).

The spelling of 121216352 in words is "one hundred twenty-one million, two hundred sixteen thousand, three hundred fifty-two".