12111022222111 has 8 divisors (see below), whose sum is σ = 12175798109904. Its totient is φ = 12046279654080.

The previous prime is 12111022222067. The next prime is 12111022222129. The reversal of 12111022222111 is 11122222011121.

It is a happy number.

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 12111022222111 - 2³¹ = 12108874738463 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 (12111022022111) 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 7 ways as a sum of consecutive naturals, for example, 7600870 + ... + 9055123.

It is an arithmetic number, because the mean of its divisors is an integer number (1521974763738).

Almost surely, 2^{12111022222111} is an apocalyptic number.

12111022222111 is a deficient number, since it is larger than the sum of its proper divisors (64775887793).

12111022222111 is a wasteful number, since it uses less digits than its factorization.

12111022222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16659881.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12111022222111 its reverse (11122222011121), we get a palindrome (23233244233232).

The spelling of 12111022222111 in words is "twelve trillion, one hundred eleven billion, twenty-two million, two hundred twenty-two thousand, one hundred eleven".