21222311331333 has 12 divisors (see below), whose sum is σ = 32916237983520. Its totient is φ = 12127035046392.

The previous prime is 21222311331289. The next prime is 21222311331407. The reversal of 21222311331333 is 33313311322212.

It is not a de Polignac number, because 21222311331333 - 2²⁵ = 21222277776901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21222311331333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222311335333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72184732273 + ... + 72184732566.

It is an arithmetic number, because the mean of its divisors is an integer number (2743019831960).

Almost surely, 2^{21222311331333} is an apocalyptic number.

It is an amenable number.

21222311331333 is a deficient number, since it is larger than the sum of its proper divisors (11693926652187).

21222311331333 is a wasteful number, since it uses less digits than its factorization.

21222311331333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144369464856 (or 144369464849 counting only the distinct ones).

The product of its digits is 11664, while the sum is 30.

Adding to 21222311331333 its reverse (33313311322212), we get a palindrome (54535622653545).

The spelling of 21222311331333 in words is "twenty-one trillion, two hundred twenty-two billion, three hundred eleven million, three hundred thirty-one thousand, three hundred thirty-three".