212144124 has 24 divisors (see below), whose sum is σ = 495303760. Its totient is φ = 70671744.

The previous prime is 212144081. The next prime is 212144143. The reversal of 212144124 is 421441212.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 212144124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19992 + ... + 28704.

Almost surely, 2^212144124 is an apocalyptic number.

It is an amenable number.

212144124 is an abundant number, since it is smaller than the sum of its proper divisors (283159636).

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

212144124 is a wasteful number, since it uses less digits than its factorization.

212144124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10749 (or 10747 counting only the distinct ones).

The product of its digits is 512, while the sum is 21.

The square root of 212144124 is about 14565.1681761660. The cubic root of 212144124 is about 596.4082866724.

Adding to 212144124 its reverse (421441212), we get a palindrome (633585336).

The spelling of 212144124 in words is "two hundred twelve million, one hundred forty-four thousand, one hundred twenty-four".