210102020221201 has 4 divisors (see below), whose sum is σ = 222460962587172. Its totient is φ = 197743077855232.

The previous prime is 210102020221169. The next prime is 210102020221217. The reversal of 210102020221201 is 102122020201012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105046592602176 + 105055427619025 = 10249224^2 + 10249655^2 .

It is a cyclic number.

It is not a de Polignac number, because 210102020221201 - 2⁵ = 210102020221169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210102020221601) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6179471182960 + ... + 6179471182993.

It is an arithmetic number, because the mean of its divisors is an integer number (55615240646793).

Almost surely, 2^{210102020221201} is an apocalyptic number.

It is an amenable number.

210102020221201 is a deficient number, since it is larger than the sum of its proper divisors (12358942365971).

210102020221201 is a wasteful number, since it uses less digits than its factorization.

210102020221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12358942365970.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210102020221201 its reverse (102122020201012), we get a palindrome (312224040422213).

The spelling of 210102020221201 in words is "two hundred ten trillion, one hundred two billion, twenty million, two hundred twenty-one thousand, two hundred one".