210221000002242 has 24 divisors (see below), whose sum is σ = 472348419759216. Its totient is φ = 70073666667252.

The previous prime is 210221000002241. The next prime is 210221000002261. The reversal of 210221000002242 is 242200000122012.

210221000002242 is a `hidden beast` number, since 210 + 2 + 210 + 0 + 0 + 0 + 0 + 2 + 242 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (210221000002241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216276748488 + ... + 216276749459.

It is an arithmetic number, because the mean of its divisors is an integer number (19681184156634).

Almost surely, 2^{210221000002242} is an apocalyptic number.

210221000002242 is an abundant number, since it is smaller than the sum of its proper divisors (262127419756974).

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

210221000002242 is an equidigital number, since it uses as much as digits as its factorization.

210221000002242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432553497964 (or 432553497952 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 210221000002242 its reverse (242200000122012), we get a palindrome (452421000124254).

The spelling of 210221000002242 in words is "two hundred ten trillion, two hundred twenty-one billion, two thousand, two hundred forty-two".