202221021021222 has 128 divisors (see below), whose sum is σ = 485287644441600. Its totient is φ = 56121980060160.

The previous prime is 202221021021209. The next prime is 202221021021301. The reversal of 202221021021222 is 222120120122202.

202221021021222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9704878 + ... + 22329950.

It is an arithmetic number, because the mean of its divisors is an integer number (3791309722200).

Almost surely, 2^{202221021021222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202221021021222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242643822220800).

202221021021222 is an abundant number, since it is smaller than the sum of its proper divisors (283066623420378).

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

202221021021222 is a wasteful number, since it uses less digits than its factorization.

202221021021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12625323 (or 12625309 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 202221021021222 its reverse (222120120122202), we get a palindrome (424341141143424).

The spelling of 202221021021222 in words is "two hundred two trillion, two hundred twenty-one billion, twenty-one million, twenty-one thousand, two hundred twenty-two".