2222202021021 has 6 divisors (see below), whose sum is σ = 3209847363710. Its totient is φ = 1481468014008.

The previous prime is 2222202021019. The next prime is 2222202021029. The reversal of 2222202021021 is 1201202022222.

2222202021021 is a `hidden beast` number, since 222 + 220 + 202 + 1 + 0 + 21 = 666.

2222202021021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1534281072921 + 687920948100 = 1238661^2 + 829410^2 .

It is not a de Polignac number, because 2222202021021 - 2¹ = 2222202021019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2222202020985 and 2222202021003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222202021029) 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, 123455667826 + ... + 123455667843.

Almost surely, 2^{2222202021021} is an apocalyptic number.

It is an amenable number.

2222202021021 is a deficient number, since it is larger than the sum of its proper divisors (987645342689).

2222202021021 is a wasteful number, since it uses less digits than its factorization.

2222202021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246911335675 (or 246911335672 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2222202021021 its reverse (1201202022222), we get a palindrome (3423404043243).

The spelling of 2222202021021 in words is "two trillion, two hundred twenty-two billion, two hundred two million, twenty-one thousand, twenty-one".