12101101321 has 4 divisors (see below), whose sum is σ = 12103114500. Its totient is φ = 12099088144.

The previous prime is 12101101247. The next prime is 12101101339. The reversal of 12101101321 is 12310110121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11313513225 + 787588096 = 106365^2 + 28064^2 .

It is a cyclic number.

It is not a de Polignac number, because 12101101321 - 2¹³ = 12101093129 is a prime.

It is a super-2 number, since 2×12101101321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101101361) 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 3 ways as a sum of consecutive naturals, for example, 997546 + ... + 1009603.

It is an arithmetic number, because the mean of its divisors is an integer number (3025778625).

Almost surely, 2^12101101321 is an apocalyptic number.

It is an amenable number.

12101101321 is a deficient number, since it is larger than the sum of its proper divisors (2013179).

12101101321 is an equidigital number, since it uses as much as digits as its factorization.

12101101321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013178.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12101101321 its reverse (12310110121), we get a palindrome (24411211442).

The spelling of 12101101321 in words is "twelve billion, one hundred one million, one hundred one thousand, three hundred twenty-one".