120421209986 has 48 divisors (see below), whose sum is σ = 239191133760. Its totient is φ = 44877460320.

The previous prime is 120421209977. The next prime is 120421210043. The reversal of 120421209986 is 689902124021.

It is a super-2 number, since 2×120421209986² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2403641 + ... + 2453228.

It is an arithmetic number, because the mean of its divisors is an integer number (4983148620).

Almost surely, 2^120421209986 is an apocalyptic number.

120421209986 is a deficient number, since it is larger than the sum of its proper divisors (118769923774).

120421209986 is a wasteful number, since it uses less digits than its factorization.

120421209986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4856919 (or 4856912 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 120421209986 in words is "one hundred twenty billion, four hundred twenty-one million, two hundred nine thousand, nine hundred eighty-six".