12320101 has 4 divisors (see below), whose sum is σ = 12351532. Its totient is φ = 12288672.

The previous prime is 12320093. The next prime is 12320117. The reversal of 12320101 is 10102321.

It is a Cunningham number, because it is equal to 3510²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10102321 = 47 ⋅214943.

It can be written as a sum of positive squares in 2 ways, for example, as 8259876 + 4060225 = 2874^2 + 2015^2 .

It is a cyclic number.

It is not a de Polignac number, because 12320101 - 2³ = 12320093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15120 + ... + 15913.

It is an arithmetic number, because the mean of its divisors is an integer number (3087883).

Almost surely, 2^12320101 is an apocalyptic number.

It is an amenable number.

12320101 is a deficient number, since it is larger than the sum of its proper divisors (31431).

12320101 is an equidigital number, since it uses as much as digits as its factorization.

12320101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31430.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 12320101 is about 3510.0001424501. Note that the first 3 decimals coincide. The cubic root of 12320101 is about 230.9607011975.

Adding to 12320101 its reverse (10102321), we get a palindrome (22422422).

It can be divided in two parts, 12320 and 101, that added together give a palindrome (12421).

The spelling of 12320101 in words is "twelve million, three hundred twenty thousand, one hundred one".