2022121012221 has 56 divisors (see below), whose sum is σ = 3063430591704. Its totient is φ = 1334028009600.

The previous prime is 2022121012199. The next prime is 2022121012237. The reversal of 2022121012221 is 1222101212202.

It is a happy number.

2022121012221 is a `hidden beast` number, since 2 + 0 + 221 + 210 + 12 + 221 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 641528912025 + 1380592100196 = 800955^2 + 1174986^2 .

It is not a de Polignac number, because 2022121012221 - 2⁹ = 2022121011709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2022121012194 and 2022121012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022121012721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 164701935 + ... + 164714211.

It is an arithmetic number, because the mean of its divisors is an integer number (54704117709).

Almost surely, 2^{2022121012221} is an apocalyptic number.

It is an amenable number.

2022121012221 is a deficient number, since it is larger than the sum of its proper divisors (1041309579483).

2022121012221 is a wasteful number, since it uses less digits than its factorization.

2022121012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14633 (or 14618 counting only the distinct ones).

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

Adding to 2022121012221 its reverse (1222101212202), we get a palindrome (3244222224423).

The spelling of 2022121012221 in words is "two trillion, twenty-two billion, one hundred twenty-one million, twelve thousand, two hundred twenty-one".