212224040 has 32 divisors (see below), whose sum is σ = 545719680. Its totient is φ = 72762432.

The previous prime is 212224027. The next prime is 212224043. The reversal of 212224040 is 40422212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (212224043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378692 + ... + 379251.

It is an arithmetic number, because the mean of its divisors is an integer number (17053740).

Almost surely, 2^212224040 is an apocalyptic number.

212224040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212224040 is an abundant number, since it is smaller than the sum of its proper divisors (333495640).

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

212224040 is a wasteful number, since it uses less digits than its factorization.

212224040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757961 (or 757957 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 212224040 is about 14567.9113121957. The cubic root of 212224040 is about 596.4831674973.

Adding to 212224040 its reverse (40422212), we get a palindrome (252646252).

It can be divided in two parts, 2122 and 24040, that added together give a palindrome (26162).

The spelling of 212224040 in words is "two hundred twelve million, two hundred twenty-four thousand, forty".