1121121112209 has 32 divisors (see below), whose sum is σ = 1782739144704. Its totient is φ = 612756809280.

The previous prime is 1121121112183. The next prime is 1121121112231. The reversal of 1121121112209 is 9022111211211.

It is not a de Polignac number, because 1121121112209 - 2⁷ = 1121121112081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121121112009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12946164 + ... + 13032474.

It is an arithmetic number, because the mean of its divisors is an integer number (55710598272).

Almost surely, 2^{1121121112209} is an apocalyptic number.

It is an amenable number.

1121121112209 is a deficient number, since it is larger than the sum of its proper divisors (661618032495).

1121121112209 is a wasteful number, since it uses less digits than its factorization.

1121121112209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113237.

The product of its (nonzero) digits is 144, while the sum is 24.

The spelling of 1121121112209 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred twelve thousand, two hundred nine".