222001200100 has 18 divisors (see below), whose sum is σ = 481742604434. Its totient is φ = 88800480000.

The previous prime is 222001200089. The next prime is 222001200103. The reversal of 222001200100 is 1002100222.

It can be written as a sum of positive squares in 3 ways, for example, as 222367744 + 221778832356 = 14912^2 + 470934^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (222001200103) 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, 1110005901 + ... + 1110006100.

Almost surely, 2^222001200100 is an apocalyptic number.

222001200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222001200100 is an abundant number, since it is smaller than the sum of its proper divisors (259741404334).

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

222001200100 is a wasteful number, since it uses less digits than its factorization.

222001200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220012015 (or 2220012008 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 222001200100 its reverse (1002100222), we get a palindrome (223003300322).

The spelling of 222001200100 in words is "two hundred twenty-two billion, one million, two hundred thousand, one hundred".