210022012012221 has 12 divisors (see below), whose sum is σ = 313825994961180. Its totient is φ = 135186582444480.

The previous prime is 210022012012217. The next prime is 210022012012229. The reversal of 210022012012221 is 122210210220012.

It is a happy number.

210022012012221 is a `hidden beast` number, since 2 + 100 + 220 + 120 + 1 + 2 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 71253941852025 + 138768070160196 = 8441205^2 + 11779986^2 .

It is not a de Polignac number, because 210022012012221 - 2² = 210022012012217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210022012012194 and 210022012012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210022012012229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 402341018920 + ... + 402341019441.

It is an arithmetic number, because the mean of its divisors is an integer number (26152166246765).

Almost surely, 2^{210022012012221} is an apocalyptic number.

It is an amenable number.

210022012012221 is a deficient number, since it is larger than the sum of its proper divisors (103803982948959).

210022012012221 is a wasteful number, since it uses less digits than its factorization.

210022012012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804682038396 (or 804682038393 counting only the distinct ones).

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

Adding to 210022012012221 its reverse (122210210220012), we get a palindrome (332232222232233).

The spelling of 210022012012221 in words is "two hundred ten trillion, twenty-two billion, twelve million, twelve thousand, two hundred twenty-one".