121331376 has 60 divisors (see below), whose sum is σ = 345338760. Its totient is φ = 39755520.

The previous prime is 121331347. The next prime is 121331381. The reversal of 121331376 is 673133121.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1356 + ... + 15636.

It is an arithmetic number, because the mean of its divisors is an integer number (5755646).

Almost surely, 2^121331376 is an apocalyptic number.

121331376 is a gapful number since it is divisible by the number (16) 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 121331376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172669380).

121331376 is an abundant number, since it is smaller than the sum of its proper divisors (224007384).

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

121331376 is a wasteful number, since it uses less digits than its factorization.

121331376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14354 (or 14345 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 121331376 is about 11015.0522468121. The cubic root of 121331376 is about 495.0598519609.

Adding to 121331376 its reverse (673133121), we get a palindrome (794464497).

The spelling of 121331376 in words is "one hundred twenty-one million, three hundred thirty-one thousand, three hundred seventy-six".