11211232111 has 2 divisors, whose sum is σ = 11211232112. Its totient is φ = 11211232110.

The previous prime is 11211232069. The next prime is 11211232121. The reversal of 11211232111 is 11123211211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11211232111 - 2³³ = 2621297519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11211232121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605616055 + 5605616056.

It is an arithmetic number, because the mean of its divisors is an integer number (5605616056).

Almost surely, 2^11211232111 is an apocalyptic number.

11211232111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211232111 is an equidigital number, since it uses as much as digits as its factorization.

11211232111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24, while the sum is 16.

Adding to 11211232111 its reverse (11123211211), we get a palindrome (22334443322).

The spelling of 11211232111 in words is "eleven billion, two hundred eleven million, two hundred thirty-two thousand, one hundred eleven".