21223441354 has 32 divisors (see below), whose sum is σ = 32779468800. Its totient is φ = 10300998960.

The previous prime is 21223441321. The next prime is 21223441367. The reversal of 21223441354 is 45314432212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6803007 + ... + 6806125.

It is an arithmetic number, because the mean of its divisors is an integer number (1024358400).

Almost surely, 2^21223441354 is an apocalyptic number.

21223441354 is a deficient number, since it is larger than the sum of its proper divisors (11556027446).

21223441354 is a wasteful number, since it uses less digits than its factorization.

21223441354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738.

The product of its digits is 23040, while the sum is 31.

Adding to 21223441354 its reverse (45314432212), we get a palindrome (66537873566).

The spelling of 21223441354 in words is "twenty-one billion, two hundred twenty-three million, four hundred forty-one thousand, three hundred fifty-four".