43212106201421 has 8 divisors (see below), whose sum is σ = 43313427273600. Its totient is φ = 43110798257520.

The previous prime is 43212106201409. The next prime is 43212106201441. The reversal of 43212106201421 is 12410260121234.

It is a happy number.

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 43212106201421 - 2¹⁰ = 43212106200397 is a prime.

It is a super-2 number, since 2×43212106201421² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43212106201441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3324275 + ... + 9872943.

It is an arithmetic number, because the mean of its divisors is an integer number (5414178409200).

Almost surely, 2^{43212106201421} is an apocalyptic number.

It is an amenable number.

43212106201421 is a deficient number, since it is larger than the sum of its proper divisors (101321072179).

43212106201421 is a wasteful number, since it uses less digits than its factorization.

43212106201421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6564139.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 43212106201421 its reverse (12410260121234), we get a palindrome (55622366322655).

The spelling of 43212106201421 in words is "forty-three trillion, two hundred twelve billion, one hundred six million, two hundred one thousand, four hundred twenty-one".