13223020121 has 8 divisors (see below), whose sum is σ = 14002457760. Its totient is φ = 12443761728.

The previous prime is 13223020093. The next prime is 13223020123. The reversal of 13223020121 is 12102032231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13223020121 - 2²² = 13218825817 is a prime.

It is a super-2 number, since 2×13223020121² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 13223020121.

It is not an unprimeable number, because it can be changed into a prime (13223020123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125630 + ... + 205496.

It is an arithmetic number, because the mean of its divisors is an integer number (1750307220).

Almost surely, 2^13223020121 is an apocalyptic number.

It is an amenable number.

13223020121 is a deficient number, since it is larger than the sum of its proper divisors (779437639).

13223020121 is an equidigital number, since it uses as much as digits as its factorization.

13223020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89623.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13223020121 its reverse (12102032231), we get a palindrome (25325052352).

The spelling of 13223020121 in words is "thirteen billion, two hundred twenty-three million, twenty thousand, one hundred twenty-one".