121216488 has 16 divisors (see below), whose sum is σ = 303041280. Its totient is φ = 40405488.

The previous prime is 121216483. The next prime is 121216507. The reversal of 121216488 is 884612121.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (121216481) 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, 2525320 + ... + 2525367.

It is an arithmetic number, because the mean of its divisors is an integer number (18940080).

Almost surely, 2^121216488 is an apocalyptic number.

It is an amenable number.

121216488 is an abundant number, since it is smaller than the sum of its proper divisors (181824792).

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

121216488 is a wasteful number, since it uses less digits than its factorization.

121216488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050696 (or 5050692 counting only the distinct ones).

The product of its digits is 6144, while the sum is 33.

The square root of 121216488 is about 11009.8359660805. The cubic root of 121216488 is about 494.9035461489.

The spelling of 121216488 in words is "one hundred twenty-one million, two hundred sixteen thousand, four hundred eighty-eight".