12343145221 has 8 divisors (see below), whose sum is σ = 13525634304. Its totient is φ = 11170720320.

The previous prime is 12343145189. The next prime is 12343145231. The reversal of 12343145221 is 12254134321.

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

It is a cyclic number.

It is not a de Polignac number, because 12343145221 - 2⁵ = 12343145189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12343145221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12343145231) 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, 2513476 + ... + 2518381.

It is an arithmetic number, because the mean of its divisors is an integer number (1690704288).

Almost surely, 2^12343145221 is an apocalyptic number.

12343145221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12343145221 is a deficient number, since it is larger than the sum of its proper divisors (1182489083).

12343145221 is a wasteful number, since it uses less digits than its factorization.

12343145221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5032091.

The product of its digits is 5760, while the sum is 28.

Adding to 12343145221 its reverse (12254134321), we get a palindrome (24597279542).

The spelling of 12343145221 in words is "twelve billion, three hundred forty-three million, one hundred forty-five thousand, two hundred twenty-one".