21554241422 has 32 divisors (see below), whose sum is σ = 37811448000. Its totient is φ = 9211259904.

The previous prime is 21554241409. The next prime is 21554241437. The reversal of 21554241422 is 22414245512.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 197654 + ... + 286662.

It is an arithmetic number, because the mean of its divisors is an integer number (1181607750).

Almost surely, 2^21554241422 is an apocalyptic number.

21554241422 is a deficient number, since it is larger than the sum of its proper divisors (16257206578).

21554241422 is an equidigital number, since it uses as much as digits as its factorization.

21554241422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89385 (or 89371 counting only the distinct ones).

The product of its digits is 25600, while the sum is 32.

Adding to 21554241422 its reverse (22414245512), we get a palindrome (43968486934).

The spelling of 21554241422 in words is "twenty-one billion, five hundred fifty-four million, two hundred forty-one thousand, four hundred twenty-two".