13222021311 has 10 divisors (see below), whose sum is σ = 19751414672. Its totient is φ = 8814680820.

The previous prime is 13222021291. The next prime is 13222021313. The reversal of 13222021311 is 11312022231.

13222021311 is a `hidden beast` number, since 132 + 220 + 2 + 1 + 311 = 666.

It is not a de Polignac number, because 13222021311 - 2¹⁴ = 13222004927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13222021313) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 81617335 + ... + 81617496.

Almost surely, 2^13222021311 is an apocalyptic number.

13222021311 is a deficient number, since it is larger than the sum of its proper divisors (6529393361).

13222021311 is an equidigital number, since it uses as much as digits as its factorization.

13222021311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163234843 (or 163234834 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13222021311 its reverse (11312022231), we get a palindrome (24534043542).

The spelling of 13222021311 in words is "thirteen billion, two hundred twenty-two million, twenty-one thousand, three hundred eleven".