121331316 has 12 divisors (see below), whose sum is σ = 283106432. Its totient is φ = 40443768.

The previous prime is 121331269. The next prime is 121331333. The reversal of 121331316 is 613133121.

It is a tau number, because it is divible by the number of its divisors (12).

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

It is a junction number, because it is equal to n+sod(n) for n = 121331292 and 121331301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5055460 + ... + 5055483.

Almost surely, 2^121331316 is an apocalyptic number.

It is an amenable number.

121331316 is an abundant number, since it is smaller than the sum of its proper divisors (161775116).

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

121331316 is a wasteful number, since it uses less digits than its factorization.

121331316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110950 (or 10110948 counting only the distinct ones).

The product of its digits is 324, while the sum is 21.

The square root of 121331316 is about 11015.0495232659. The cubic root of 121331316 is about 495.0597703563.

Adding to 121331316 its reverse (613133121), we get a palindrome (734464437).

The spelling of 121331316 in words is "one hundred twenty-one million, three hundred thirty-one thousand, three hundred sixteen".