12020121122 has 4 divisors (see below), whose sum is σ = 18030181686.
Its totient is φ = 6010060560.
The previous prime is 12020121097. The next prime is 12020121161. The reversal of 12020121122 is 22112102021.
Adding to 12020121122 its reverse (22112102021), we get a palindrome (34132223143).
12020121122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22112102021 = 491 ⋅45034831.
It can be written as a sum of positive squares in only one way, i.e., 10594379041 + 1425742081 = 102929^2 + 37759^2
It is a junction number, because it is equal to n+sod(n) for n = 12020121097 and 12020121106.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3005030279 + ... + 3005030282.
Almost surely, 212020121122 is an apocalyptic number.
12020121122 is a deficient number, since it is larger than the sum of its proper divisors (6010060564).
12020121122 is an equidigital number, since it uses as much as digits as its factorization.
12020121122 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6010060563.
The product of its (nonzero) digits is 32, while the sum is 14.
The spelling of 12020121122 in words is "twelve billion, twenty million, one hundred twenty-one thousand, one hundred twenty-two".