210021100220218 has 64 divisors (see below), whose sum is σ = 369143324559360. Its totient is φ = 87753867469632.

The previous prime is 210021100220213. The next prime is 210021100220219. The reversal of 210021100220218 is 812022001120012.

It is not an unprimeable number, because it can be changed into a prime (210021100220213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 716700453 + ... + 716993431.

It is an arithmetic number, because the mean of its divisors is an integer number (5767864446240).

Almost surely, 2^{210021100220218} is an apocalyptic number.

210021100220218 is a deficient number, since it is larger than the sum of its proper divisors (159122224339142).

210021100220218 is a wasteful number, since it uses less digits than its factorization.

210021100220218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299131.

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

The spelling of 210021100220218 in words is "two hundred ten trillion, twenty-one billion, one hundred million, two hundred twenty thousand, two hundred eighteen".