121328080 has 40 divisors (see below), whose sum is σ = 282553344. Its totient is φ = 48451200.

The previous prime is 121328071. The next prime is 121328087. The reversal of 121328080 is 80823121.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121328087) 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, 81745 + ... + 83215.

Almost surely, 2^121328080 is an apocalyptic number.

121328080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121328080 is an abundant number, since it is smaller than the sum of its proper divisors (161225264).

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

121328080 is a wasteful number, since it uses less digits than its factorization.

121328080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515 (or 2509 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 121328080 is about 11014.9026323431. The cubic root of 121328080 is about 495.0553691082.

The spelling of 121328080 in words is "one hundred twenty-one million, three hundred twenty-eight thousand, eighty".