212124024234 has 20 divisors (see below), whose sum is σ = 475314943554. Its totient is φ = 70708008024.

The previous prime is 212124024221. The next prime is 212124024239. The reversal of 212124024234 is 432420421212.

It is a happy number.

212124024234 is a `hidden beast` number, since 2 + 1 + 21 + 2 + 402 + 4 + 234 = 666.

It can be written as a sum of positive squares in only one way, i.e., 150934581009 + 61189443225 = 388503^2 + 247365^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 212124024198 and 212124024207.

It is not an unprimeable number, because it can be changed into a prime (212124024239) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 654703617 + ... + 654703940.

Almost surely, 2^212124024234 is an apocalyptic number.

212124024234 is an abundant number, since it is smaller than the sum of its proper divisors (263190919320).

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

212124024234 is a wasteful number, since it uses less digits than its factorization.

212124024234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309407571 (or 1309407562 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 212124024234 its reverse (432420421212), we get a palindrome (644544445446).

The spelling of 212124024234 in words is "two hundred twelve billion, one hundred twenty-four million, twenty-four thousand, two hundred thirty-four".