121329984 has 28 divisors (see below), whose sum is σ = 321019424. Its totient is φ = 40443264.

The previous prime is 121329977. The next prime is 121330031. The reversal of 121329984 is 489923121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315772 + ... + 316155.

Almost surely, 2^121329984 is an apocalyptic number.

It is an amenable number.

121329984 is an abundant number, since it is smaller than the sum of its proper divisors (199689440).

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

121329984 is an equidigital number, since it uses as much as digits as its factorization.

121329984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631942 (or 631932 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 121329984 is about 11014.9890603668. The cubic root of 121329984 is about 495.0579587272.

The spelling of 121329984 in words is "one hundred twenty-one million, three hundred twenty-nine thousand, nine hundred eighty-four".