121122222112009 has 2 divisors, whose sum is σ = 121122222112010. Its totient is φ = 121122222112008.

The previous prime is 121122222111983. The next prime is 121122222112123. The reversal of 121122222112009 is 900211222221121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105490257014025 + 15631965097984 = 10270845^2 + 3953728^2 .

It is a cyclic number.

It is not a de Polignac number, because 121122222112009 - 2³⁷ = 120984783158537 is a prime.

It is not a weakly prime, because it can be changed into another prime (121122222119009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561111056004 + 60561111056005.

It is an arithmetic number, because the mean of its divisors is an integer number (60561111056005).

Almost surely, 2^{121122222112009} is an apocalyptic number.

It is an amenable number.

121122222112009 is a deficient number, since it is larger than the sum of its proper divisors (1).

121122222112009 is an equidigital number, since it uses as much as digits as its factorization.

121122222112009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 121122222112009 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred twelve thousand, nine".