12122121002121 has 80 divisors (see below), whose sum is σ = 20152402670400. Its totient is φ = 7214139676800.

The previous prime is 12122121002119. The next prime is 12122121002149. The reversal of 12122121002121 is 12120012122121.

12122121002121 is a `hidden beast` number, since 1 + 21 + 221 + 210 + 0 + 212 + 1 = 666.

12122121002121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12122121002121 - 2¹ = 12122121002119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12122121002094 and 12122121002103.

It is not an unprimeable number, because it can be changed into a prime (12122121002821) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3247830 + ... + 5898528.

It is an arithmetic number, because the mean of its divisors is an integer number (251905033380).

Almost surely, 2^{12122121002121} is an apocalyptic number.

It is an amenable number.

12122121002121 is a deficient number, since it is larger than the sum of its proper divisors (8030281668279).

12122121002121 is a wasteful number, since it uses less digits than its factorization.

12122121002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650868 (or 2650859 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12122121002121 its reverse (12120012122121), we get a palindrome (24242133124242).

The spelling of 12122121002121 in words is "twelve trillion, one hundred twenty-two billion, one hundred twenty-one million, two thousand, one hundred twenty-one".