2022212011221 has 6 divisors (see below), whose sum is σ = 2920972905110. Its totient is φ = 1348141340808.

The previous prime is 2022212011207. The next prime is 2022212011229. The reversal of 2022212011221 is 1221102122202.

It is a happy number.

2022212011221 is a `hidden beast` number, since 20 + 2 + 221 + 201 + 1 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1914033512196 + 108178499025 = 1383486^2 + 328905^2 .

It is not a de Polignac number, because 2022212011221 - 2²² = 2022207816917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2022212011194 and 2022212011203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022212011229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112345111726 + ... + 112345111743.

Almost surely, 2^{2022212011221} is an apocalyptic number.

It is an amenable number.

2022212011221 is a deficient number, since it is larger than the sum of its proper divisors (898760893889).

2022212011221 is a wasteful number, since it uses less digits than its factorization.

2022212011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224690223475 (or 224690223472 counting only the distinct ones).

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

Adding to 2022212011221 its reverse (1221102122202), we get a palindrome (3243314133423).

The spelling of 2022212011221 in words is "two trillion, twenty-two billion, two hundred twelve million, eleven thousand, two hundred twenty-one".