121695328 has 12 divisors (see below), whose sum is σ = 239587740. Its totient is φ = 60847648.

The previous prime is 121695271. The next prime is 121695391. The reversal of 121695328 is 823596121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1901458 + ... + 1901521.

It is an arithmetic number, because the mean of its divisors is an integer number (19965645).

Almost surely, 2^121695328 is an apocalyptic number.

It is an amenable number.

121695328 is a deficient number, since it is larger than the sum of its proper divisors (117892412).

121695328 is an equidigital number, since it uses as much as digits as its factorization.

121695328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3802989 (or 3802981 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 121695328 is about 11031.5605423711. The cubic root of 121695328 is about 495.5543603934.

The spelling of 121695328 in words is "one hundred twenty-one million, six hundred ninety-five thousand, three hundred twenty-eight".