12210022122021 has 24 divisors (see below), whose sum is σ = 18674335218240. Its totient is φ = 7661114971776.

The previous prime is 12210022122019. The next prime is 12210022122037. The reversal of 12210022122021 is 12022122001221.

It is a happy number.

12210022122021 is a `hidden beast` number, since 1 + 221 + 0 + 0 + 221 + 220 + 2 + 1 = 666.

It is not a de Polignac number, because 12210022122021 - 2¹ = 12210022122019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12210022121985 and 12210022122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210022122061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18021720 + ... + 18686958.

It is an arithmetic number, because the mean of its divisors is an integer number (778097300760).

Almost surely, 2^{12210022122021} is an apocalyptic number.

It is an amenable number.

12210022122021 is a deficient number, since it is larger than the sum of its proper divisors (6464313096219).

12210022122021 is a wasteful number, since it uses less digits than its factorization.

12210022122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785225 (or 785222 counting only the distinct ones).

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

Adding to 12210022122021 its reverse (12022122001221), we get a palindrome (24232144123242).

The spelling of 12210022122021 in words is "twelve trillion, two hundred ten billion, twenty-two million, one hundred twenty-two thousand, twenty-one".