13221010121 has 8 divisors (see below), whose sum is σ = 15050003904. Its totient is φ = 11496530320.

The previous prime is 13221010111. The next prime is 13221010123. The reversal of 13221010121 is 12101012231.

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

It is not a de Polignac number, because 13221010121 - 2³⁰ = 12147268297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13221010096 and 13221010105.

It is not an unprimeable number, because it can be changed into a prime (13221010123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26128226 + ... + 26128731.

It is an arithmetic number, because the mean of its divisors is an integer number (1881250488).

Almost surely, 2^13221010121 is an apocalyptic number.

13221010121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13221010121 is a deficient number, since it is larger than the sum of its proper divisors (1828993783).

13221010121 is a wasteful number, since it uses less digits than its factorization.

13221010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52256991.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 13221010121 its reverse (12101012231), we get a palindrome (25322022352).

The spelling of 13221010121 in words is "thirteen billion, two hundred twenty-one million, ten thousand, one hundred twenty-one".