43044003212121 has 96 divisors (see below), whose sum is σ = 67443038208000. Its totient is φ = 26385521437440.

The previous prime is 43044003212083. The next prime is 43044003212191. The reversal of 43044003212121 is 12121230044034.

43044003212121 is a `hidden beast` number, since 4 + 3 + 0 + 440 + 0 + 3 + 2 + 1 + 212 + 1 = 666.

It is not a de Polignac number, because 43044003212121 - 2²⁷ = 43043868994393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43044003212191) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 173834320 + ... + 174081758.

It is an arithmetic number, because the mean of its divisors is an integer number (702531648000).

Almost surely, 2^{43044003212121} is an apocalyptic number.

43044003212121 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

43044003212121 is a deficient number, since it is larger than the sum of its proper divisors (24399034995879).

43044003212121 is a wasteful number, since it uses less digits than its factorization.

43044003212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247811 (or 247808 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 43044003212121 its reverse (12121230044034), we get a palindrome (55165233256155).

The spelling of 43044003212121 in words is "forty-three trillion, forty-four billion, three million, two hundred twelve thousand, one hundred twenty-one".