1112121121109 has 32 divisors (see below), whose sum is σ = 1202759663616. Its totient is φ = 1024544563200.

The previous prime is 1112121121099. The next prime is 1112121121121. The reversal of 1112121121109 is 9011211212111.

It is a cyclic number.

It is not a de Polignac number, because 1112121121109 - 2²⁸ = 1111852685653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112121124109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181035692 + ... + 181041834.

It is an arithmetic number, because the mean of its divisors is an integer number (37586239488).

Almost surely, 2^{1112121121109} is an apocalyptic number.

It is an amenable number.

1112121121109 is a deficient number, since it is larger than the sum of its proper divisors (90638542507).

1112121121109 is a wasteful number, since it uses less digits than its factorization.

1112121121109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7445.

The product of its (nonzero) digits is 72, while the sum is 23.

It can be divided in two parts, 111212 and 1121109, that added together give a palindrome (1232321).

The spelling of 1112121121109 in words is "one trillion, one hundred twelve billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred nine".