21220322101311 has 16 divisors (see below), whose sum is σ = 29524388495616. Its totient is φ = 13531587807936.

The previous prime is 21220322101289. The next prime is 21220322101327. The reversal of 21220322101311 is 11310122302212.

It is a de Polignac number, because none of the positive numbers 2^k-21220322101311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220322102311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2094291 + ... + 6843003.

It is an arithmetic number, because the mean of its divisors is an integer number (1845274280976).

Almost surely, 2^{21220322101311} is an apocalyptic number.

21220322101311 is a deficient number, since it is larger than the sum of its proper divisors (8304066394305).

21220322101311 is a wasteful number, since it uses less digits than its factorization.

21220322101311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4813502.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21220322101311 its reverse (11310122302212), we get a palindrome (32530444403523).

The spelling of 21220322101311 in words is "twenty-one trillion, two hundred twenty billion, three hundred twenty-two million, one hundred one thousand, three hundred eleven".