210043221320 has 64 divisors (see below), whose sum is σ = 477542044800. Its totient is φ = 83139955200.

The previous prime is 210043221307. The next prime is 210043221347. The reversal of 210043221320 is 23122340012.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 210043221292 and 210043221301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3906620 + ... + 3960020.

It is an arithmetic number, because the mean of its divisors is an integer number (7461594450).

Almost surely, 2^210043221320 is an apocalyptic number.

210043221320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210043221320 is an abundant number, since it is smaller than the sum of its proper divisors (267498823480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210043221320 is a wasteful number, since it uses less digits than its factorization.

210043221320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54438 (or 54434 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 210043221320 its reverse (23122340012), we get a palindrome (233165561332).

The spelling of 210043221320 in words is "two hundred ten billion, forty-three million, two hundred twenty-one thousand, three hundred twenty".