1101121222109 has 2 divisors, whose sum is σ = 1101121222110. Its totient is φ = 1101121222108.

The previous prime is 1101121222087. The next prime is 1101121222111. The reversal of 1101121222109 is 9012221211011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 891428664025 + 209692558084 = 944155^2 + 457922^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101121222109 - 2²⁰ = 1101120173533 is a prime.

Together with 1101121222111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101121222139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550560611054 + 550560611055.

It is an arithmetic number, because the mean of its divisors is an integer number (550560611055).

Almost surely, 2^{1101121222109} is an apocalyptic number.

It is an amenable number.

1101121222109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101121222109 is an equidigital number, since it uses as much as digits as its factorization.

1101121222109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 1101121222109 in words is "one trillion, one hundred one billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred nine".