43121212134 has 96 divisors (see below), whose sum is σ = 116671430400. Its totient is φ = 10338736320.

The previous prime is 43121212129. The next prime is 43121212157.

43121212134 is nontrivially palindromic in base 10.

43121212134 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×43121212134⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 260284 + ... + 392415.

It is an arithmetic number, because the mean of its divisors is an integer number (1215327400).

Almost surely, 2^43121212134 is an apocalyptic number.

43121212134 is an abundant number, since it is smaller than the sum of its proper divisors (73550218266).

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

43121212134 is a wasteful number, since it uses less digits than its factorization.

43121212134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652746 (or 652735 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

It can be divided in two parts, 43121 and 212134, that added together give a triangular number (255255 = T₇₁₄).

The spelling of 43121212134 in words is "forty-three billion, one hundred twenty-one million, two hundred twelve thousand, one hundred thirty-four".