222112212212100 has 72 divisors (see below), whose sum is σ = 734451048388288. Its totient is φ = 50768505648000.

The previous prime is 222112212212003. The next prime is 222112212212101. The reversal of 222112212212100 is 1212212211222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (222112212212101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52883857951 + ... + 52883862150.

Almost surely, 2^{222112212212100} is an apocalyptic number.

222112212212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222112212212100 is an abundant number, since it is smaller than the sum of its proper divisors (512338836176188).

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

222112212212100 is a wasteful number, since it uses less digits than its factorization.

222112212212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105767720125 (or 105767720118 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222112212212100 its reverse (1212212211222), we get a palindrome (223324424423322).

It can be divided in two parts, 222112 and 212212100, that added together give a palindrome (212434212).

The spelling of 222112212212100 in words is "two hundred twenty-two trillion, one hundred twelve billion, two hundred twelve million, two hundred twelve thousand, one hundred".