21423114441 has 32 divisors (see below), whose sum is σ = 34311324800. Its totient is φ = 13164690240.

The previous prime is 21423114437. The next prime is 21423114463. The reversal of 21423114441 is 14441132412.

21423114441 is a `hidden beast` number, since 214 + 2 + 3 + 1 + 1 + 4 + 441 = 666.

It is not a de Polignac number, because 21423114441 - 2² = 21423114437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21423114241) 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 31 ways as a sum of consecutive naturals, for example, 545350 + ... + 583311.

It is an arithmetic number, because the mean of its divisors is an integer number (1072228900).

Almost surely, 2^21423114441 is an apocalyptic number.

It is an amenable number.

21423114441 is a deficient number, since it is larger than the sum of its proper divisors (12888210359).

21423114441 is a wasteful number, since it uses less digits than its factorization.

21423114441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128726 (or 1128720 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 21423114441 its reverse (14441132412), we get a palindrome (35864246853).

The spelling of 21423114441 in words is "twenty-one billion, four hundred twenty-three million, one hundred fourteen thousand, four hundred forty-one".