13223201221021 has 16 divisors (see below), whose sum is σ = 14436586920960. Its totient is φ = 12011698621120.

The previous prime is 13223201221001. The next prime is 13223201221051. The reversal of 13223201221021 is 12012210232231.

It is not a de Polignac number, because 13223201221021 - 2⁷ = 13223201220893 is a prime.

It is a super-2 number, since 2×13223201221021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13223201220983 and 13223201221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13223201221001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73794291 + ... + 73973263.

It is an arithmetic number, because the mean of its divisors is an integer number (902286682560).

Almost surely, 2^{13223201221021} is an apocalyptic number.

13223201221021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13223201221021 is a deficient number, since it is larger than the sum of its proper divisors (1213385699939).

13223201221021 is a wasteful number, since it uses less digits than its factorization.

13223201221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184196.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 13223201221021 its reverse (12012210232231), we get a palindrome (25235411453252).

The spelling of 13223201221021 in words is "thirteen trillion, two hundred twenty-three billion, two hundred one million, two hundred twenty-one thousand, twenty-one".