212124012 has 12 divisors (see below), whose sum is σ = 494956056. Its totient is φ = 70708000.

The previous prime is 212123993. The next prime is 212124043. The reversal of 212124012 is 210421212.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×212124012² = 89993192933952288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212123982 and 212124000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8838489 + ... + 8838512.

It is an arithmetic number, because the mean of its divisors is an integer number (41246338).

Almost surely, 2^212124012 is an apocalyptic number.

It is an amenable number.

212124012 is an abundant number, since it is smaller than the sum of its proper divisors (282832044).

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

212124012 is a wasteful number, since it uses less digits than its factorization.

212124012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17677008 (or 17677006 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 212124012 is about 14564.4777455287. The cubic root of 212124012 is about 596.3894388843.

Adding to 212124012 its reverse (210421212), we get a palindrome (422545224).

The spelling of 212124012 in words is "two hundred twelve million, one hundred twenty-four thousand, twelve".