12100221323 has 4 divisors (see below), whose sum is σ = 12305309880. Its totient is φ = 11895132768.

The previous prime is 12100221281. The next prime is 12100221337. The reversal of 12100221323 is 32312200121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12100221323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12100227323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102544190 + ... + 102544307.

It is an arithmetic number, because the mean of its divisors is an integer number (3076327470).

Almost surely, 2^12100221323 is an apocalyptic number.

12100221323 is a deficient number, since it is larger than the sum of its proper divisors (205088557).

12100221323 is an equidigital number, since it uses as much as digits as its factorization.

12100221323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205088556.

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

Adding to 12100221323 its reverse (32312200121), we get a palindrome (44412421444).

The spelling of 12100221323 in words is "twelve billion, one hundred million, two hundred twenty-one thousand, three hundred twenty-three".