221131103211321 has 8 divisors (see below), whose sum is σ = 294860637718080. Its totient is φ = 147411152089392.

The previous prime is 221131103211307. The next prime is 221131103211349. The reversal of 221131103211321 is 123112301131122.

221131103211321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 221131103211321 - 2⁵ = 221131103211289 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221131103211291 and 221131103211300.

It is not an unprimeable number, because it can be changed into a prime (221131103211301) 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, 2395792366 + ... + 2395884663.

It is an arithmetic number, because the mean of its divisors is an integer number (36857579714760).

Almost surely, 2^{221131103211321} is an apocalyptic number.

It is an amenable number.

221131103211321 is a deficient number, since it is larger than the sum of its proper divisors (73729534506759).

221131103211321 is a wasteful number, since it uses less digits than its factorization.

221131103211321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4791692415.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 221131103211321 its reverse (123112301131122), we get a palindrome (344243404342443).

The spelling of 221131103211321 in words is "two hundred twenty-one trillion, one hundred thirty-one billion, one hundred three million, two hundred eleven thousand, three hundred twenty-one".