22221112210100 has 36 divisors (see below), whose sum is σ = 48224496812268. Its totient is φ = 8887581600000.

The previous prime is 22221112210061. The next prime is 22221112210111. The reversal of 22221112210100 is 101221112222.

It can be written as a sum of positive squares in 6 ways, for example, as 2947800551056 + 19273311659044 = 1716916^2 + 4390138^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9755801 + ... + 11816000.

Almost surely, 2^{22221112210100} is an apocalyptic number.

22221112210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221112210100 is an abundant number, since it is smaller than the sum of its proper divisors (26003384602168).

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

22221112210100 is a wasteful number, since it uses less digits than its factorization.

22221112210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21582116 (or 21582109 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22221112210100 its reverse (101221112222), we get a palindrome (22322333322322).

The spelling of 22221112210100 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred twelve million, two hundred ten thousand, one hundred".