210020213321 has 8 divisors (see below), whose sum is σ = 217090846464. Its totient is φ = 202968066960.

The previous prime is 210020213311. The next prime is 210020213323. The reversal of 210020213321 is 123312020012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210020213321 - 2⁶ = 210020213257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 210020213321.

It is not an unprimeable number, because it can be changed into a prime (210020213323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4598591 + ... + 4644036.

It is an arithmetic number, because the mean of its divisors is an integer number (27136355808).

Almost surely, 2^210020213321 is an apocalyptic number.

It is an amenable number.

210020213321 is a deficient number, since it is larger than the sum of its proper divisors (7070633143).

210020213321 is an equidigital number, since it uses as much as digits as its factorization.

210020213321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9243391.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 210020213321 its reverse (123312020012), we get a palindrome (333332233333).

The spelling of 210020213321 in words is "two hundred ten billion, twenty million, two hundred thirteen thousand, three hundred twenty-one".