221213010222 has 96 divisors (see below), whose sum is σ = 497432707200. Its totient is φ = 70991023104.

The previous prime is 221213010197. The next prime is 221213010281. The reversal of 221213010222 is 222010312122.

221213010222 is a `hidden beast` number, since 22 + 121 + 301 + 0 + 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 = 221213010195 and 221213010204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70922779 + ... + 70925897.

It is an arithmetic number, because the mean of its divisors is an integer number (5181590700).

Almost surely, 2^221213010222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221213010222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248716353600).

221213010222 is an abundant number, since it is smaller than the sum of its proper divisors (276219696978).

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

221213010222 is a wasteful number, since it uses less digits than its factorization.

221213010222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250 (or 4247 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 221213010222 its reverse (222010312122), we get a palindrome (443223322344).

The spelling of 221213010222 in words is "two hundred twenty-one billion, two hundred thirteen million, ten thousand, two hundred twenty-two".