1100000122221 has 96 divisors (see below), whose sum is σ = 2037777328384. Its totient is φ = 513216000000.

The previous prime is 1100000122201. The next prime is 1100000122259. The reversal of 1100000122221 is 1222210000011.

It is not a de Polignac number, because 1100000122221 - 2⁵ = 1100000122189 is a prime.

1100000122221 is a modest number, since divided by 122221 gives 110 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1100000122197 and 1100000122206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100000122201) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 772221 + ... + 1672221.

Almost surely, 2^{1100000122221} is an apocalyptic number.

1100000122221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1100000122221 is a deficient number, since it is larger than the sum of its proper divisors (937777206163).

1100000122221 is a wasteful number, since it uses less digits than its factorization.

1100000122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900083 (or 900072 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1100000122221 its reverse (1222210000011), we get a palindrome (2322210122232).

It can be divided in two parts, 1100000 and 122221, that added together give a palindrome (1222221).

The spelling of 1100000122221 in words is "one trillion, one hundred billion, one hundred twenty-two thousand, two hundred twenty-one".