43122012100 has 18 divisors (see below), whose sum is σ = 93574766474. Its totient is φ = 17248804800.

The previous prime is 43122012079. The next prime is 43122012103. The reversal of 43122012100 is 121022134.

It can be written as a sum of positive squares in 3 ways, for example, as 316057284 + 42805954816 = 17778^2 + 206896^2 .

It is not an unprimeable number, because it can be changed into a prime (43122012103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 215609961 + ... + 215610160.

Almost surely, 2^43122012100 is an apocalyptic number.

It is an amenable number.

43122012100 is an abundant number, since it is smaller than the sum of its proper divisors (50452754374).

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

43122012100 is a wasteful number, since it uses less digits than its factorization.

43122012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431220135 (or 431220128 counting only the distinct ones).

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

Adding to 43122012100 its reverse (121022134), we get a palindrome (43243034234).

The spelling of 43122012100 in words is "forty-three billion, one hundred twenty-two million, twelve thousand, one hundred".