43212211645121 has 8 divisors (see below), whose sum is σ = 43943333461440. Its totient is φ = 42483624047568.

The previous prime is 43212211645069. The next prime is 43212211645133. The reversal of 43212211645121 is 12154611221234.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43212211645121 - 2²⁶ = 43212144536257 is a prime.

It is a super-2 number, since 2×43212211645121² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43212211645171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 633520301 + ... + 633588506.

It is an arithmetic number, because the mean of its divisors is an integer number (5492916682680).

Almost surely, 2^{43212211645121} is an apocalyptic number.

It is an amenable number.

43212211645121 is a deficient number, since it is larger than the sum of its proper divisors (731121816319).

43212211645121 is a wasteful number, since it uses less digits than its factorization.

43212211645121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267109383.

The product of its digits is 23040, while the sum is 35.

Adding to 43212211645121 its reverse (12154611221234), we get a palindrome (55366822866355).

The spelling of 43212211645121 in words is "forty-three trillion, two hundred twelve billion, two hundred eleven million, six hundred forty-five thousand, one hundred twenty-one".