12120122002221 has 24 divisors (see below), whose sum is σ = 18165214968576. Its totient is φ = 7778918315520.

The previous prime is 12120122002193. The next prime is 12120122002279. The reversal of 12120122002221 is 12220022102121.

It is a happy number.

12120122002221 is a `hidden beast` number, since 1 + 21 + 201 + 220 + 0 + 2 + 221 = 666.

12120122002221 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 12120122002221 - 2¹⁴ = 12120121985837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12120122002194 and 12120122002203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120122000221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112488375 + ... + 112596068.

It is an arithmetic number, because the mean of its divisors is an integer number (756883957024).

Almost surely, 2^{12120122002221} is an apocalyptic number.

It is an amenable number.

12120122002221 is a deficient number, since it is larger than the sum of its proper divisors (6045092966355).

12120122002221 is a wasteful number, since it uses less digits than its factorization.

12120122002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225084673 (or 225084670 counting only the distinct ones).

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

Adding to 12120122002221 its reverse (12220022102121), we get a palindrome (24340144104342).

The spelling of 12120122002221 in words is "twelve trillion, one hundred twenty billion, one hundred twenty-two million, two thousand, two hundred twenty-one".