13222312021 has 16 divisors (see below), whose sum is σ = 14003136000. Its totient is φ = 12450121200.

The previous prime is 13222311943. The next prime is 13222312027. The reversal of 13222312021 is 12021322231.

It is a cyclic number.

It is not a de Polignac number, because 13222312021 - 2²¹ = 13220214869 is a prime.

It is a super-2 number, since 2×13222312021² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13222312021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13222312027) 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, 6846426 + ... + 6848356.

It is an arithmetic number, because the mean of its divisors is an integer number (875196000).

Almost surely, 2^13222312021 is an apocalyptic number.

It is an amenable number.

13222312021 is a deficient number, since it is larger than the sum of its proper divisors (780823979).

13222312021 is a wasteful number, since it uses less digits than its factorization.

13222312021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3960.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13222312021 its reverse (12021322231), we get a palindrome (25243634252).

The spelling of 13222312021 in words is "thirteen billion, two hundred twenty-two million, three hundred twelve thousand, twenty-one".