21040304223334 has 16 divisors (see below), whose sum is σ = 34475070379536. Its totient is φ = 9551140855200.

The previous prime is 21040304223299. The next prime is 21040304223343. The reversal of 21040304223334 is 43332240304012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21040304223296 and 21040304223305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631672557 + ... + 631705864.

It is an arithmetic number, because the mean of its divisors is an integer number (2154691898721).

Almost surely, 2^{21040304223334} is an apocalyptic number.

21040304223334 is a deficient number, since it is larger than the sum of its proper divisors (13434766156202).

21040304223334 is a wasteful number, since it uses less digits than its factorization.

21040304223334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263379191.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 21040304223334 its reverse (43332240304012), we get a palindrome (64372544527346).

The spelling of 21040304223334 in words is "twenty-one trillion, forty billion, three hundred four million, two hundred twenty-three thousand, three hundred thirty-four".