222102221100 has 108 divisors (see below), whose sum is σ = 644305860744. Its totient is φ = 59071893760.

The previous prime is 222102221093. The next prime is 222102221113. The reversal of 222102221100 is 1122201222.

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

It is a self number, because there is not a number n which added to its sum of digits gives 222102221100.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 52666192 + ... + 52670408.

Almost surely, 2^222102221100 is an apocalyptic number.

222102221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222102221100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322152930372).

222102221100 is an abundant number, since it is smaller than the sum of its proper divisors (422203639644).

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

222102221100 is a wasteful number, since it uses less digits than its factorization.

222102221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5072 (or 4646 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222102221100 its reverse (1122201222), we get a palindrome (223224422322).

The spelling of 222102221100 in words is "two hundred twenty-two billion, one hundred two million, two hundred twenty-one thousand, one hundred".