21223434031304 has 32 divisors (see below), whose sum is σ = 39802965632640. Its totient is φ = 10609310212800.

The previous prime is 21223434031291. The next prime is 21223434031343. The reversal of 21223434031304 is 40313043432212.

It is a super-2 number, since 2×21223434031304² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

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, 982055459 + ... + 982077069.

It is an arithmetic number, because the mean of its divisors is an integer number (1243842676020).

Almost surely, 2^{21223434031304} is an apocalyptic number.

It is an amenable number.

21223434031304 is a deficient number, since it is larger than the sum of its proper divisors (18579531601336).

21223434031304 is a wasteful number, since it uses less digits than its factorization.

21223434031304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43781 (or 43777 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 21223434031304 its reverse (40313043432212), we get a palindrome (61536477463516).

The spelling of 21223434031304 in words is "twenty-one trillion, two hundred twenty-three billion, four hundred thirty-four million, thirty-one thousand, three hundred four".