212124130 has 32 divisors (see below), whose sum is σ = 409845744. Its totient is φ = 78759936.

The previous prime is 212124127. The next prime is 212124131. The reversal of 212124130 is 31421212.

It can be written as a sum of positive squares in 8 ways, for example, as 134490409 + 77633721 = 11597^2 + 8811^2 .

It is not an unprimeable number, because it can be changed into a prime (212124131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3864 + ... + 20956.

Almost surely, 2^212124130 is an apocalyptic number.

212124130 is a deficient number, since it is larger than the sum of its proper divisors (197721614).

212124130 is a wasteful number, since it uses less digits than its factorization.

212124130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17190.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 212124130 is about 14564.4817964801. The cubic root of 212124130 is about 596.3895494704.

Adding to 212124130 its reverse (31421212), we get a palindrome (243545342).

The spelling of 212124130 in words is "two hundred twelve million, one hundred twenty-four thousand, one hundred thirty".