202221000021222 has 384 divisors, whose sum is σ = 559722029368320. Its totient is φ = 51340318387200.

The previous prime is 202221000021217. The next prime is 202221000021223. The reversal of 202221000021222 is 222120000122202.

202221000021222 is a `hidden beast` number, since 202 + 221 + 0 + 0 + 0 + 0 + 21 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 202221000021195 and 202221000021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202221000021223) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8930828233 + ... + 8930850875.

It is an arithmetic number, because the mean of its divisors is an integer number (1457609451480).

Almost surely, 2^{202221000021222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202221000021222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279861014684160).

202221000021222 is an abundant number, since it is smaller than the sum of its proper divisors (357501029347098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202221000021222 is a wasteful number, since it uses less digits than its factorization.

202221000021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24268 (or 24265 counting only the distinct ones).

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

Adding to 202221000021222 its reverse (222120000122202), we get a palindrome (424341000143424).

The spelling of 202221000021222 in words is "two hundred two trillion, two hundred twenty-one billion, twenty-one thousand, two hundred twenty-two".