210420221204 has 24 divisors (see below), whose sum is σ = 373746145248. Its totient is φ = 103642916000.

The previous prime is 210420221189. The next prime is 210420221257. The reversal of 210420221204 is 402122024012.

It is a congruent number.

It is an unprimeable number.

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, 798047 + ... + 1028454.

It is an arithmetic number, because the mean of its divisors is an integer number (15572756052).

Almost surely, 2^210420221204 is an apocalyptic number.

It is an amenable number.

210420221204 is a deficient number, since it is larger than the sum of its proper divisors (163325924044).

210420221204 is a wasteful number, since it uses less digits than its factorization.

210420221204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826935 (or 1826933 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 210420221204 its reverse (402122024012), we get a palindrome (612542245216).

The spelling of 210420221204 in words is "two hundred ten billion, four hundred twenty million, two hundred twenty-one thousand, two hundred four".