212323020 has 192 divisors, whose sum is σ = 752188416. Its totient is φ = 43545600.

The previous prime is 212322991. The next prime is 212323031. The reversal of 212323020 is 20323212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 201495 + ... + 202545.

It is an arithmetic number, because the mean of its divisors is an integer number (3917648).

Almost surely, 2^212323020 is an apocalyptic number.

212323020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212323020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (376094208).

212323020 is an abundant number, since it is smaller than the sum of its proper divisors (539865396).

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

212323020 is a wasteful number, since it uses less digits than its factorization.

212323020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120 (or 1118 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 212323020 is about 14571.3081087458. The cubic root of 212323020 is about 596.5758851235.

Adding to 212323020 its reverse (20323212), we get a palindrome (232646232).

The spelling of 212323020 in words is "two hundred twelve million, three hundred twenty-three thousand, twenty".