21111000110222 has 16 divisors (see below), whose sum is σ = 34603528026672. Its totient is φ = 9579727163520.

The previous prime is 21111000110219. The next prime is 21111000110231. The reversal of 21111000110222 is 22201100011112.

It is a super-2 number, since 2×21111000110222² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21111000110197 and 21111000110206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809085533 + ... + 809111624.

It is an arithmetic number, because the mean of its divisors is an integer number (2162720501667).

Almost surely, 2^{21111000110222} is an apocalyptic number.

21111000110222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21111000110222 is a deficient number, since it is larger than the sum of its proper divisors (13492527916450).

21111000110222 is a wasteful number, since it uses less digits than its factorization.

21111000110222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618197763.

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

Adding to 21111000110222 its reverse (22201100011112), we get a palindrome (43312100121334).

The spelling of 21111000110222 in words is "twenty-one trillion, one hundred eleven billion, one hundred ten thousand, two hundred twenty-two".