20222002111221 has 12 divisors (see below), whose sum is σ = 29209597881100. Its totient is φ = 13481316613440.

The previous prime is 20222002111147. The next prime is 20222002111261. The reversal of 20222002111221 is 12211120022202.

It is a happy number.

20222002111221 is a `hidden beast` number, since 202 + 220 + 0 + 21 + 1 + 1 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18679900100625 + 1542102010596 = 4322025^2 + 1241814^2 .

It is not a de Polignac number, because 20222002111221 - 2³⁴ = 20204822242037 is a prime.

It is a super-2 number, since 2×20222002111221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20222002111194 and 20222002111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222002111261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11061201 + ... + 12759081.

Almost surely, 2^{20222002111221} is an apocalyptic number.

It is an amenable number.

20222002111221 is a deficient number, since it is larger than the sum of its proper divisors (8987595769879).

20222002111221 is a wasteful number, since it uses less digits than its factorization.

20222002111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3021236 (or 3021233 counting only the distinct ones).

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

Adding to 20222002111221 its reverse (12211120022202), we get a palindrome (32433122133423).

It can be divided in two parts, 20 and 222002111221, that added together give a square (222002111241 = 471171²).

The spelling of 20222002111221 in words is "twenty trillion, two hundred twenty-two billion, two million, one hundred eleven thousand, two hundred twenty-one".