4221605028222 has 64 divisors (see below), whose sum is σ = 9695245363200. Its totient is φ = 1360222269120.

The previous prime is 4221605028211. The next prime is 4221605028241. The reversal of 4221605028222 is 2228205061224.

4221605028222 is a `hidden beast` number, since 4 + 2 + 2 + 1 + 605 + 0 + 28 + 2 + 22 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29943 + ... + 2905874.

It is an arithmetic number, because the mean of its divisors is an integer number (151488208800).

Almost surely, 2^{4221605028222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4221605028222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4847622681600).

4221605028222 is an abundant number, since it is smaller than the sum of its proper divisors (5473640334978).

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

4221605028222 is a wasteful number, since it uses less digits than its factorization.

4221605028222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936718 (or 2936712 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 4221605028222 in words is "four trillion, two hundred twenty-one billion, six hundred five million, twenty-eight thousand, two hundred twenty-two".