12122120113 has 4 divisors (see below), whose sum is σ = 12835186020. Its totient is φ = 11409054208.

The previous prime is 12122120111. The next prime is 12122120159. The reversal of 12122120113 is 31102122121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3813433009 + 8308687104 = 61753^2 + 91152^2 .

It is a cyclic number.

It is not a de Polignac number, because 12122120113 - 2¹ = 12122120111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122120111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356532928 + ... + 356532961.

It is an arithmetic number, because the mean of its divisors is an integer number (3208796505).

Almost surely, 2^12122120113 is an apocalyptic number.

It is an amenable number.

12122120113 is a deficient number, since it is larger than the sum of its proper divisors (713065907).

12122120113 is an equidigital number, since it uses as much as digits as its factorization.

12122120113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713065906.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12122120113 its reverse (31102122121), we get a palindrome (43224242234).

The spelling of 12122120113 in words is "twelve billion, one hundred twenty-two million, one hundred twenty thousand, one hundred thirteen".