222111100111100 has 72 divisors (see below), whose sum is σ = 482337374838480. Its totient is φ = 88778782904320.

The previous prime is 222111100111099. The next prime is 222111100111141. The reversal of 222111100111100 is 1111001111222.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1021519196 + ... + 1021736604.

It is an arithmetic number, because the mean of its divisors is an integer number (6699130206090).

Almost surely, 2^{222111100111100} is an apocalyptic number.

222111100111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222111100111100 is an abundant number, since it is smaller than the sum of its proper divisors (260226274727380).

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

222111100111100 is a wasteful number, since it uses less digits than its factorization.

222111100111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224927 (or 224920 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 222111100111100 its reverse (1111001111222), we get a palindrome (223222101222322).

The spelling of 222111100111100 in words is "two hundred twenty-two trillion, one hundred eleven billion, one hundred million, one hundred eleven thousand, one hundred".