12301221111 has 4 divisors (see below), whose sum is σ = 16401628152. Its totient is φ = 8200814072.

The previous prime is 12301221047. The next prime is 12301221113. The reversal of 12301221111 is 11112210321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11112210321 = 3 ⋅3704070107.

It is a cyclic number.

It is not a de Polignac number, because 12301221111 - 2⁶ = 12301221047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12301221113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2050203516 + ... + 2050203521.

It is an arithmetic number, because the mean of its divisors is an integer number (4100407038).

Almost surely, 2^12301221111 is an apocalyptic number.

12301221111 is a deficient number, since it is larger than the sum of its proper divisors (4100407041).

12301221111 is an equidigital number, since it uses as much as digits as its factorization.

12301221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100407040.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12301221111 its reverse (11112210321), we get a palindrome (23413431432).

The spelling of 12301221111 in words is "twelve billion, three hundred one million, two hundred twenty-one thousand, one hundred eleven".