222220221100 has 18 divisors (see below), whose sum is σ = 482217880004. Its totient is φ = 88888088400.

The previous prime is 222220221079. The next prime is 222220221107. The reversal of 222220221100 is 1122022222.

It is not an unprimeable number, because it can be changed into a prime (222220221107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1111101006 + ... + 1111101205.

Almost surely, 2^222220221100 is an apocalyptic number.

222220221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222220221100 is an abundant number, since it is smaller than the sum of its proper divisors (259997658904).

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

222220221100 is a wasteful number, since it uses less digits than its factorization.

222220221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222202225 (or 2222202218 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 222220221100 its reverse (1122022222), we get a palindrome (223342243322).

The spelling of 222220221100 in words is "two hundred twenty-two billion, two hundred twenty million, two hundred twenty-one thousand, one hundred".