12122311101 has 4 divisors (see below), whose sum is σ = 16163081472. Its totient is φ = 8081540732.

The previous prime is 12122311099. The next prime is 12122311109. The reversal of 12122311101 is 10111322121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10111322121 = 3 ⋅3370440707.

It is a cyclic number.

It is not a de Polignac number, because 12122311101 - 2¹ = 12122311099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122311109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2020385181 + ... + 2020385186.

It is an arithmetic number, because the mean of its divisors is an integer number (4040770368).

Almost surely, 2^12122311101 is an apocalyptic number.

It is an amenable number.

12122311101 is a deficient number, since it is larger than the sum of its proper divisors (4040770371).

12122311101 is an equidigital number, since it uses as much as digits as its factorization.

12122311101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040770370.

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

Adding to 12122311101 its reverse (10111322121), we get a palindrome (22233633222).

The spelling of 12122311101 in words is "twelve billion, one hundred twenty-two million, three hundred eleven thousand, one hundred one".