512321212 has 12 divisors (see below), whose sum is σ = 965528536. Its totient is φ = 236455920.

The previous prime is 512321207. The next prime is 512321213. The reversal of 512321212 is 212123215.

It is a self number, because there is not a number n which added to its sum of digits gives 512321212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512321213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4926114 + ... + 4926217.

Almost surely, 2^512321212 is an apocalyptic number.

512321212 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

512321212 is a deficient number, since it is larger than the sum of its proper divisors (453207324).

512321212 is a wasteful number, since it uses less digits than its factorization.

512321212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9852348 (or 9852346 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 512321212 is about 22634.5137345603. The cubic root of 512321212 is about 800.1672629431.

Adding to 512321212 its reverse (212123215), we get a palindrome (724444427).

It can be divided in two parts, 5123 and 21212, that added together give a triangular number (26335 = T₂₂₉).

The spelling of 512321212 in words is "five hundred twelve million, three hundred twenty-one thousand, two hundred twelve".