20002202212221 has 12 divisors (see below), whose sum is σ = 28915693810848. Its totient is φ = 13323898113864.

The previous prime is 20002202212199. The next prime is 20002202212253. The reversal of 20002202212221 is 12221220220002.

20002202212221 is a `hidden beast` number, since 2 + 0 + 0 + 0 + 220 + 221 + 2 + 221 = 666.

It is not a de Polignac number, because 20002202212221 - 2¹¹ = 20002202210173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20002202212194 and 20002202212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002202213221) 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, 908601795 + ... + 908623808.

It is an arithmetic number, because the mean of its divisors is an integer number (2409641150904).

Almost surely, 2^{20002202212221} is an apocalyptic number.

It is an amenable number.

20002202212221 is a deficient number, since it is larger than the sum of its proper divisors (8913491598627).

20002202212221 is a wasteful number, since it uses less digits than its factorization.

20002202212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817226832 (or 1817226829 counting only the distinct ones).

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

Adding to 20002202212221 its reverse (12221220220002), we get a palindrome (32223422432223).

The spelling of 20002202212221 in words is "twenty trillion, two billion, two hundred two million, two hundred twelve thousand, two hundred twenty-one".