121321982 has 16 divisors (see below), whose sum is σ = 186853392. Its totient is φ = 59055360.

The previous prime is 121321951. The next prime is 121321999. The reversal of 121321982 is 289123121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9518 + ... + 18254.

It is an arithmetic number, because the mean of its divisors is an integer number (11678337).

Almost surely, 2^121321982 is an apocalyptic number.

121321982 is a deficient number, since it is larger than the sum of its proper divisors (65531410).

121321982 is a wasteful number, since it uses less digits than its factorization.

121321982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8923.

The product of its digits is 1728, while the sum is 29.

The square root of 121321982 is about 11014.6258220604. The cubic root of 121321982 is about 495.0470750727.

The spelling of 121321982 in words is "one hundred twenty-one million, three hundred twenty-one thousand, nine hundred eighty-two".