212012121986 has 32 divisors (see below), whose sum is σ = 368644141440. Its totient is φ = 89569814400.

The previous prime is 212012121973. The next prime is 212012121991. The reversal of 212012121986 is 689121210212.

212012121986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 155396 + ... + 669456.

It is an arithmetic number, because the mean of its divisors is an integer number (11520129420).

Almost surely, 2^212012121986 is an apocalyptic number.

212012121986 is a deficient number, since it is larger than the sum of its proper divisors (156632019454).

212012121986 is a wasteful number, since it uses less digits than its factorization.

212012121986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514490.

The product of its (nonzero) digits is 6912, while the sum is 35.

The spelling of 212012121986 in words is "two hundred twelve billion, twelve million, one hundred twenty-one thousand, nine hundred eighty-six".