1112121091 has 8 divisors (see below), whose sum is σ = 1171408400. Its totient is φ = 1052909280.

The previous prime is 1112121089. The next prime is 1112121103. The reversal of 1112121091 is 1901212111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1112121091 - 2¹ = 1112121089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112121071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12745 + ... + 48853.

It is an arithmetic number, because the mean of its divisors is an integer number (146426050).

Almost surely, 2^1112121091 is an apocalyptic number.

1112121091 is a deficient number, since it is larger than the sum of its proper divisors (59287309).

1112121091 is a wasteful number, since it uses less digits than its factorization.

1112121091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37749.

The product of its (nonzero) digits is 36, while the sum is 19.

The square root of 1112121091 is about 33348.4795905301. The cubic root of 1112121091 is about 1036.0578978465.

The spelling of 1112121091 in words is "one billion, one hundred twelve million, one hundred twenty-one thousand, ninety-one".