1100112121111 has 4 divisors (see below), whose sum is σ = 1100116710424. Its totient is φ = 1100107531800.

The previous prime is 1100112121109. The next prime is 1100112121133. The reversal of 1100112121111 is 1111212110011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1100112121111 - 2¹ = 1100112121109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100112121091 and 1100112121100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100112121711) 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 3 ways as a sum of consecutive naturals, for example, 1914045 + ... + 2421526.

It is an arithmetic number, because the mean of its divisors is an integer number (275029177606).

Almost surely, 2^{1100112121111} is an apocalyptic number.

1100112121111 is a deficient number, since it is larger than the sum of its proper divisors (4589313).

1100112121111 is an equidigital number, since it uses as much as digits as its factorization.

1100112121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4589312.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1100112121111 its reverse (1111212110011), we get a palindrome (2211324231122).

The spelling of 1100112121111 in words is "one trillion, one hundred billion, one hundred twelve million, one hundred twenty-one thousand, one hundred eleven".