43213123012 has 12 divisors (see below), whose sum is σ = 76472662140. Its totient is φ = 21363790976.

The previous prime is 43213122893. The next prime is 43213123027. The reversal of 43213123012 is 21032131234.

It can be written as a sum of positive squares in 2 ways, for example, as 27800893696 + 15412229316 = 166736^2 + 124146^2 .

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, 60692233 + ... + 60692944.

It is an arithmetic number, because the mean of its divisors is an integer number (6372721845).

Almost surely, 2^43213123012 is an apocalyptic number.

It is an amenable number.

43213123012 is a deficient number, since it is larger than the sum of its proper divisors (33259539128).

43213123012 is a wasteful number, since it uses less digits than its factorization.

43213123012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121385270 (or 121385268 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 43213123012 its reverse (21032131234), we get a palindrome (64245254246).

The spelling of 43213123012 in words is "forty-three billion, two hundred thirteen million, one hundred twenty-three thousand, twelve".