21220222011304 has 16 divisors (see below), whose sum is σ = 40381765768800. Its totient is φ = 10451751139632.

The previous prime is 21220222011293. The next prime is 21220222011323. The reversal of 21220222011304 is 40311022202212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19794982684 + ... + 19794983755.

It is an arithmetic number, because the mean of its divisors is an integer number (2523860360550).

Almost surely, 2^{21220222011304} is an apocalyptic number.

It is an amenable number.

21220222011304 is a deficient number, since it is larger than the sum of its proper divisors (19161543757496).

21220222011304 is a wasteful number, since it uses less digits than its factorization.

21220222011304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39589966512 (or 39589966508 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21220222011304 its reverse (40311022202212), we get a palindrome (61531244213516).

The spelling of 21220222011304 in words is "twenty-one trillion, two hundred twenty billion, two hundred twenty-two million, eleven thousand, three hundred four".