12122110202121 has 32 divisors (see below), whose sum is σ = 18348501895680. Its totient is φ = 7906132510848.

The previous prime is 12122110202107. The next prime is 12122110202129. The reversal of 12122110202121 is 12120201122121.

12122110202121 is a `hidden beast` number, since 121 + 221 + 1 + 0 + 202 + 121 = 666.

It is not a de Polignac number, because 12122110202121 - 2¹¹ = 12122110200073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12122110202094 and 12122110202103.

It is not an unprimeable number, because it can be changed into a prime (12122110202129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1007055 + ... + 5025771.

It is an arithmetic number, because the mean of its divisors is an integer number (573390684240).

Almost surely, 2^{12122110202121} is an apocalyptic number.

It is an amenable number.

12122110202121 is a deficient number, since it is larger than the sum of its proper divisors (6226391693559).

12122110202121 is a wasteful number, since it uses less digits than its factorization.

12122110202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4021150 (or 4021144 counting only the distinct ones).

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

Adding to 12122110202121 its reverse (12120201122121), we get a palindrome (24242311324242).

The spelling of 12122110202121 in words is "twelve trillion, one hundred twenty-two billion, one hundred ten million, two hundred two thousand, one hundred twenty-one".