12353421111 has 4 divisors (see below), whose sum is σ = 16471228152. Its totient is φ = 8235614072.

The previous prime is 12353421077. The next prime is 12353421133. The reversal of 12353421111 is 11112435321.

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

It is a cyclic number.

It is not a de Polignac number, because 12353421111 - 2¹⁸ = 12353158967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12353421011) 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, 2058903516 + ... + 2058903521.

It is an arithmetic number, because the mean of its divisors is an integer number (4117807038).

Almost surely, 2^12353421111 is an apocalyptic number.

12353421111 is a deficient number, since it is larger than the sum of its proper divisors (4117807041).

12353421111 is an equidigital number, since it uses as much as digits as its factorization.

12353421111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4117807040.

The product of its digits is 720, while the sum is 24.

Adding to 12353421111 its reverse (11112435321), we get a palindrome (23465856432).

The spelling of 12353421111 in words is "twelve billion, three hundred fifty-three million, four hundred twenty-one thousand, one hundred eleven".