210235450321 has 4 divisors (see below), whose sum is σ = 226407408052. Its totient is φ = 194063492592.

The previous prime is 210235450309. The next prime is 210235450391. The reversal of 210235450321 is 123054532012.

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 68738352400 + 141497097921 = 262180^2 + 376161^2 .

It is a cyclic number.

It is not a de Polignac number, because 210235450321 - 2⁷ = 210235450193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210235450321.

It is not an unprimeable number, because it can be changed into a prime (210235450301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8085978846 + ... + 8085978871.

It is an arithmetic number, because the mean of its divisors is an integer number (56601852013).

Almost surely, 2^210235450321 is an apocalyptic number.

It is an amenable number.

210235450321 is a deficient number, since it is larger than the sum of its proper divisors (16171957731).

210235450321 is a wasteful number, since it uses less digits than its factorization.

210235450321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16171957730.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 210235450321 its reverse (123054532012), we get a palindrome (333289982333).

The spelling of 210235450321 in words is "two hundred ten billion, two hundred thirty-five million, four hundred fifty thousand, three hundred twenty-one".