222221100030 has 128 divisors (see below), whose sum is σ = 575633157120. Its totient is φ = 54719400960.

The previous prime is 222221100029. The next prime is 222221100041. The reversal of 222221100030 is 30001122222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 222221099982 and 222221100009.

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, 28904847 + ... + 28912533.

It is an arithmetic number, because the mean of its divisors is an integer number (4497134040).

Almost surely, 2^222221100030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222221100030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287816578560).

222221100030 is an abundant number, since it is smaller than the sum of its proper divisors (353412057090).

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

222221100030 is a wasteful number, since it uses less digits than its factorization.

222221100030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8994.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 222221100030 its reverse (30001122222), we get a palindrome (252222222252).

The spelling of 222221100030 in words is "two hundred twenty-two billion, two hundred twenty-one million, one hundred thousand, thirty".