212233020 has 96 divisors (see below), whose sum is σ = 618347520. Its totient is φ = 54324480.

The previous prime is 212233013. The next prime is 212233031. The reversal of 212233020 is 20332212.

212233020 is nontrivially palindromic in base 11.

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

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, 492205 + ... + 492635.

It is an arithmetic number, because the mean of its divisors is an integer number (6441120).

Almost surely, 2^212233020 is an apocalyptic number.

212233020 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 212233020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309173760).

212233020 is an abundant number, since it is smaller than the sum of its proper divisors (406114500).

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

212233020 is a wasteful number, since it uses less digits than its factorization.

212233020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755 (or 753 counting only the distinct ones).

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

The square root of 212233020 is about 14568.2195205866. The cubic root of 212233020 is about 596.4915805299.

Adding to 212233020 its reverse (20332212), we get a palindrome (232565232).

The spelling of 212233020 in words is "two hundred twelve million, two hundred thirty-three thousand, twenty".