21110000111222 has 128 divisors (see below), whose sum is σ = 36380171520000. Its totient is φ = 9099002142720.

The previous prime is 21110000111209. The next prime is 21110000111243. The reversal of 21110000111222 is 22211100001112.

It is a junction number, because it is equal to n+sod(n) for n = 21110000111197 and 21110000111206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4540759154 + ... + 4540763802.

It is an arithmetic number, because the mean of its divisors is an integer number (284220090000).

Almost surely, 2^{21110000111222} is an apocalyptic number.

21110000111222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21110000111222 is a deficient number, since it is larger than the sum of its proper divisors (15270171408778).

21110000111222 is a wasteful number, since it uses less digits than its factorization.

21110000111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5334.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21110000111222 its reverse (22211100001112), we get a palindrome (43321100112334).

It can be divided in two parts, 211100001112 and 22, that multiplied together give a palindrome (4644200024464).

The spelling of 21110000111222 in words is "twenty-one trillion, one hundred ten billion, one hundred eleven thousand, two hundred twenty-two".