20212001201218 has 8 divisors (see below), whose sum is σ = 30320550211212. Its totient is φ = 10105151130816.

The previous prime is 20212001201179. The next prime is 20212001201221. The reversal of 20212001201218 is 81210210021202.

It can be written as a sum of positive squares in 2 ways, for example, as 12227211608049 + 7984789593169 = 3496743^2 + 2825737^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424705155 + ... + 424752742.

Almost surely, 2^{20212001201218} is an apocalyptic number.

20212001201218 is a deficient number, since it is larger than the sum of its proper divisors (10108549009994).

20212001201218 is a wasteful number, since it uses less digits than its factorization.

20212001201218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849469796.

The product of its (nonzero) digits is 256, while the sum is 22.

The spelling of 20212001201218 in words is "twenty trillion, two hundred twelve billion, one million, two hundred one thousand, two hundred eighteen".