12122441111 has 16 divisors (see below), whose sum is σ = 13807687680. Its totient is φ = 10534967520.

The previous prime is 12122441087. The next prime is 12122441171. The reversal of 12122441111 is 11114422121.

It is a de Polignac number, because none of the positive numbers 2^k-12122441111 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 (12122441171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439226 + ... + 466008.

It is an arithmetic number, because the mean of its divisors is an integer number (862980480).

Almost surely, 2^12122441111 is an apocalyptic number.

12122441111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12122441111 is a deficient number, since it is larger than the sum of its proper divisors (1685246569).

12122441111 is a wasteful number, since it uses less digits than its factorization.

12122441111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28606.

The product of its digits is 128, while the sum is 20.

Adding to 12122441111 its reverse (11114422121), we get a palindrome (23236863232).

The spelling of 12122441111 in words is "twelve billion, one hundred twenty-two million, four hundred forty-one thousand, one hundred eleven".