12102022221021 has 20 divisors (see below), whose sum is σ = 18079721384032. Its totient is φ = 8067393638568.

The previous prime is 12102022220957. The next prime is 12102022221061. The reversal of 12102022221021 is 12012222020121.

It is a happy number.

12102022221021 is a `hidden beast` number, since 1 + 210 + 2 + 0 + 222 + 210 + 21 = 666.

12102022221021 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 12102022221021 - 2⁶ = 12102022220957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12102022220985 and 12102022221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102022221061) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4691881 + ... + 6798366.

Almost surely, 2^{12102022221021} is an apocalyptic number.

It is an amenable number.

12102022221021 is a deficient number, since it is larger than the sum of its proper divisors (5977699163011).

12102022221021 is a wasteful number, since it uses less digits than its factorization.

12102022221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11503262 (or 11503253 counting only the distinct ones).

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

Adding to 12102022221021 its reverse (12012222020121), we get a palindrome (24114244241142).

The spelling of 12102022221021 in words is "twelve trillion, one hundred two billion, twenty-two million, two hundred twenty-one thousand, twenty-one".