2143434400221 has 8 divisors (see below), whose sum is σ = 2857933023264. Its totient is φ = 1428946022000.

The previous prime is 2143434400181. The next prime is 2143434400229. The reversal of 2143434400221 is 1220044343412.

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 2143434400221 - 2¹⁴ = 2143434383837 is a prime.

It is a super-2 number, since 2×2143434400221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143434400229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2058951 + ... + 2919956.

It is an arithmetic number, because the mean of its divisors is an integer number (357241627908).

Almost surely, 2^{2143434400221} is an apocalyptic number.

It is an amenable number.

2143434400221 is a deficient number, since it is larger than the sum of its proper divisors (714498623043).

2143434400221 is a wasteful number, since it uses less digits than its factorization.

2143434400221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5122411.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 2143434400221 its reverse (1220044343412), we get a palindrome (3363478743633).

The spelling of 2143434400221 in words is "two trillion, one hundred forty-three billion, four hundred thirty-four million, four hundred thousand, two hundred twenty-one".