210221012002194 has 48 divisors (see below), whose sum is σ = 482482058504472. Its totient is φ = 65922927634944.

The previous prime is 210221012002189. The next prime is 210221012002237. The reversal of 210221012002194 is 491200210122012.

210221012002194 is a `hidden beast` number, since 21 + 0 + 221 + 0 + 1 + 200 + 219 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 209722907766969 + 498104235225 = 14481813^2 + 705765^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149101389 + ... + 150504704.

Almost surely, 2^{210221012002194} is an apocalyptic number.

210221012002194 is an abundant number, since it is smaller than the sum of its proper divisors (272261046502278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210221012002194 is a wasteful number, since it uses less digits than its factorization.

210221012002194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299608411 (or 299608408 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 210221012002194 in words is "two hundred ten trillion, two hundred twenty-one billion, twelve million, two thousand, one hundred ninety-four".