12002122022121 has 96 divisors (see below), whose sum is σ = 22121791930368. Its totient is φ = 6089024430720.

The previous prime is 12002122022119. The next prime is 12002122022203. The reversal of 12002122022121 is 12122022120021.

It is a happy number.

12002122022121 is a `hidden beast` number, since 1 + 200 + 2 + 1 + 220 + 221 + 21 = 666.

It is not a de Polignac number, because 12002122022121 - 2¹ = 12002122022119 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12002122022094 and 12002122022103.

It is not an unprimeable number, because it can be changed into a prime (12002122022021) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14682435 + ... + 15478311.

It is an arithmetic number, because the mean of its divisors is an integer number (230435332608).

Almost surely, 2^{12002122022121} is an apocalyptic number.

12002122022121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12002122022121 is a deficient number, since it is larger than the sum of its proper divisors (10119669908247).

12002122022121 is a wasteful number, since it uses less digits than its factorization.

12002122022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796411 (or 796408 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12002122022121 its reverse (12122022120021), we get a palindrome (24124144142142).

The spelling of 12002122022121 in words is "twelve trillion, two billion, one hundred twenty-two million, twenty-two thousand, one hundred twenty-one".