222122201100 has 72 divisors (see below), whose sum is σ = 642915965328. Its totient is φ = 59210246400.

The previous prime is 222122201087. The next prime is 222122201117. The reversal of 222122201100 is 1102221222.

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 222122201100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 664810 + ... + 941390.

Almost surely, 2^222122201100 is an apocalyptic number.

222122201100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222122201100 is an abundant number, since it is smaller than the sum of its proper divisors (420793764228).

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

222122201100 is a wasteful number, since it uses less digits than its factorization.

222122201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279275 (or 279268 counting only the distinct ones).

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

Adding to 222122201100 its reverse (1102221222), we get a palindrome (223224422322).

The spelling of 222122201100 in words is "two hundred twenty-two billion, one hundred twenty-two million, two hundred one thousand, one hundred".