12122552111 has 2 divisors, whose sum is σ = 12122552112. Its totient is φ = 12122552110.

The previous prime is 12122552107. The next prime is 12122552129. The reversal of 12122552111 is 11125522121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12122552111 - 2² = 12122552107 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12122542111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061276055 + 6061276056.

It is an arithmetic number, because the mean of its divisors is an integer number (6061276056).

Almost surely, 2^12122552111 is an apocalyptic number.

12122552111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122552111 is an equidigital number, since it uses as much as digits as its factorization.

12122552111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 400, while the sum is 23.

The spelling of 12122552111 in words is "twelve billion, one hundred twenty-two million, five hundred fifty-two thousand, one hundred eleven".