1122121002009 has 16 divisors (see below), whose sum is σ = 1709920585088. Its totient is φ = 641203782912.

The previous prime is 1122121001933. The next prime is 1122121002011. The reversal of 1122121002009 is 9002001212211.

It is not a de Polignac number, because 1122121002009 - 2⁹ = 1122121001497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122121002059) 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 15 ways as a sum of consecutive naturals, for example, 1588209 + ... + 2183265.

It is an arithmetic number, because the mean of its divisors is an integer number (106870036568).

Almost surely, 2^{1122121002009} is an apocalyptic number.

It is an amenable number.

1122121002009 is a deficient number, since it is larger than the sum of its proper divisors (587799583079).

1122121002009 is an equidigital number, since it uses as much as digits as its factorization.

1122121002009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684864.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 1122121002009 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-one million, two thousand, nine".