212024220 has 48 divisors (see below), whose sum is σ = 614144160. Its totient is φ = 54589696.

The previous prime is 212024209. The next prime is 212024237. The reversal of 212024220 is 22420212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 212024220.

It is a congruent number.

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, 59187 + ... + 62666.

It is an arithmetic number, because the mean of its divisors is an integer number (12794670).

Almost surely, 2^212024220 is an apocalyptic number.

212024220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212024220 is an abundant number, since it is smaller than the sum of its proper divisors (402119940).

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

212024220 is a wasteful number, since it uses less digits than its factorization.

212024220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121894 (or 121892 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 212024220 is about 14561.0514730221. The cubic root of 212024220 is about 596.2959020430.

Adding to 212024220 its reverse (22420212), we get a palindrome (234444432).

The spelling of 212024220 in words is "two hundred twelve million, twenty-four thousand, two hundred twenty".