43121064212 has 12 divisors (see below), whose sum is σ = 76698942516. Its totient is φ = 21207080640.

The previous prime is 43121064169. The next prime is 43121064229. The reversal of 43121064212 is 21246012134.

It can be written as a sum of positive squares in 2 ways, for example, as 1032079876 + 42088984336 = 32126^2 + 205156^2 .

It is a congruent number.

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, 88362593 + ... + 88363080.

It is an arithmetic number, because the mean of its divisors is an integer number (6391578543).

Almost surely, 2^43121064212 is an apocalyptic number.

It is an amenable number.

43121064212 is a deficient number, since it is larger than the sum of its proper divisors (33577878304).

43121064212 is a wasteful number, since it uses less digits than its factorization.

43121064212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176725738 (or 176725736 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 43121064212 its reverse (21246012134), we get a palindrome (64367076346).

The spelling of 43121064212 in words is "forty-three billion, one hundred twenty-one million, sixty-four thousand, two hundred twelve".