210101204321 has 16 divisors (see below), whose sum is σ = 214132176720. Its totient is φ = 206109066240.

The previous prime is 210101204311. The next prime is 210101204323. The reversal of 210101204321 is 123402101012.

It can be written as a sum of positive squares in 8 ways, for example, as 34633210000 + 175467994321 = 186100^2 + 418889^2 .

It is a cyclic number.

It is not a de Polignac number, because 210101204321 - 2¹⁰ = 210101203297 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 210101204321.

It is not an unprimeable number, because it can be changed into a prime (210101204323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29027915 + ... + 29035151.

It is an arithmetic number, because the mean of its divisors is an integer number (13383261045).

Almost surely, 2^210101204321 is an apocalyptic number.

It is an amenable number.

210101204321 is a deficient number, since it is larger than the sum of its proper divisors (4030972399).

210101204321 is a wasteful number, since it uses less digits than its factorization.

210101204321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9844.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 210101204321 its reverse (123402101012), we get a palindrome (333503305333).

The spelling of 210101204321 in words is "two hundred ten billion, one hundred one million, two hundred four thousand, three hundred twenty-one".