1121000002009 has 2 divisors, whose sum is σ = 1121000002010. Its totient is φ = 1121000002008.

The previous prime is 1121000001977. The next prime is 1121000002019. The reversal of 1121000002009 is 9002000001211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1074015104409 + 46984897600 = 1036347^2 + 216760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121000002009 - 2⁵ = 1121000001977 is a prime.

It is a super-3 number, since 3×1121000002009³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1121000001983 and 1121000002001.

It is not a weakly prime, because it can be changed into another prime (1121000002019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560500001004 + 560500001005.

It is an arithmetic number, because the mean of its divisors is an integer number (560500001005).

Almost surely, 2^{1121000002009} is an apocalyptic number.

It is an amenable number.

1121000002009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121000002009 is an equidigital number, since it uses as much as digits as its factorization.

1121000002009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

The spelling of 1121000002009 in words is "one trillion, one hundred twenty-one billion, two thousand, nine".