21000133221322 has 16 divisors (see below), whose sum is σ = 31632317614080. Its totient is φ = 10456028233168.

The previous prime is 21000133221289. The next prime is 21000133221329. The reversal of 21000133221322 is 22312233100012.

It is a junction number, because it is equal to n+sod(n) for n = 21000133221293 and 21000133221302.

It is not an unprimeable number, because it can be changed into a prime (21000133221329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72337623 + ... + 72627349.

It is an arithmetic number, because the mean of its divisors is an integer number (1977019850880).

Almost surely, 2^{21000133221322} is an apocalyptic number.

21000133221322 is a deficient number, since it is larger than the sum of its proper divisors (10632184392758).

21000133221322 is a wasteful number, since it uses less digits than its factorization.

21000133221322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441605.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21000133221322 its reverse (22312233100012), we get a palindrome (43312366321334).

The spelling of 21000133221322 in words is "twenty-one trillion, one hundred thirty-three million, two hundred twenty-one thousand, three hundred twenty-two".