212124124 has 24 divisors (see below), whose sum is σ = 387868320. Its totient is φ = 101316864.

The previous prime is 212124109. The next prime is 212124127. The reversal of 212124124 is 421421212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212124127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131032 + ... + 132640.

It is an arithmetic number, because the mean of its divisors is an integer number (16161180).

Almost surely, 2^212124124 is an apocalyptic number.

It is an amenable number.

212124124 is a deficient number, since it is larger than the sum of its proper divisors (175744196).

212124124 is a wasteful number, since it uses less digits than its factorization.

212124124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3069 (or 3067 counting only the distinct ones).

The product of its digits is 256, while the sum is 19.

The square root of 212124124 is about 14564.4815904995. The cubic root of 212124124 is about 596.3895438474.

Adding to 212124124 its reverse (421421212), we get a palindrome (633545336).

The spelling of 212124124 in words is "two hundred twelve million, one hundred twenty-four thousand, one hundred twenty-four".