212021230320 has 160 divisors (see below), whose sum is σ = 748107743040. Its totient is φ = 55159971840.

The previous prime is 212021230319. The next prime is 212021230331. The reversal of 212021230320 is 23032120212.

212021230320 is a `hidden beast` number, since 21 + 202 + 123 + 0 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212021230293 and 212021230302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1108489 + ... + 1285608.

It is an arithmetic number, because the mean of its divisors is an integer number (4675673394).

Almost surely, 2^212021230320 is an apocalyptic number.

212021230320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212021230320 is an abundant number, since it is smaller than the sum of its proper divisors (536086512720).

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

212021230320 is a wasteful number, since it uses less digits than its factorization.

212021230320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394160 (or 2394148 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 212021230320 its reverse (23032120212), we get a palindrome (235053350532).

The spelling of 212021230320 in words is "two hundred twelve billion, twenty-one million, two hundred thirty thousand, three hundred twenty".