210213331021 has 8 divisors (see below), whose sum is σ = 211223109888. Its totient is φ = 209203680000.

The previous prime is 210213331007. The next prime is 210213331043. The reversal of 210213331021 is 120133312012.

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 210213331021 - 2¹³ = 210213322829 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 210213331021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210213331091) 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 7 ways as a sum of consecutive naturals, for example, 5795181 + ... + 5831341.

It is an arithmetic number, because the mean of its divisors is an integer number (26402888736).

Almost surely, 2^210213331021 is an apocalyptic number.

It is an amenable number.

210213331021 is a deficient number, since it is larger than the sum of its proper divisors (1009778867).

210213331021 is a wasteful number, since it uses less digits than its factorization.

210213331021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63923.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 210213331021 its reverse (120133312012), we get a palindrome (330346643033).

The spelling of 210213331021 in words is "two hundred ten billion, two hundred thirteen million, three hundred thirty-one thousand, twenty-one".