21423324121443 has 48 divisors (see below), whose sum is σ = 32569850712672. Its totient is φ = 13551634368000.

The previous prime is 21423324121421. The next prime is 21423324121483. The reversal of 21423324121443 is 34412142332412.

21423324121443 is a `hidden beast` number, since 2 + 1 + 4 + 233 + 2 + 412 + 1 + 4 + 4 + 3 = 666.

It is not a de Polignac number, because 21423324121443 - 2¹² = 21423324117347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21423324121398 and 21423324121407.

It is not an unprimeable number, because it can be changed into a prime (21423324121483) 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 47 ways as a sum of consecutive naturals, for example, 32591973 + ... + 33242793.

It is an arithmetic number, because the mean of its divisors is an integer number (678538556514).

Almost surely, 2^{21423324121443} is an apocalyptic number.

21423324121443 is a deficient number, since it is larger than the sum of its proper divisors (11146526591229).

21423324121443 is a wasteful number, since it uses less digits than its factorization.

21423324121443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653316 (or 653313 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

Adding to 21423324121443 its reverse (34412142332412), we get a palindrome (55835466453855).

The spelling of 21423324121443 in words is "twenty-one trillion, four hundred twenty-three billion, three hundred twenty-four million, one hundred twenty-one thousand, four hundred forty-three".